# \#GPU-Profiling **URL:** https://forums.unrealengine.com/tag/gpu-profiling/10025.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [\[Released\] Level Benchmark — find out exactly what's tanking your level's FPS](https://forums.unrealengine.com/t/released-level-benchmark-find-out-exactly-whats-tanking-your-levels-fps/2747249)
**Author:** [@UnrealGameDev](https://forums.unrealengine.com/u/UnrealGameDev)\ **Replies:** 0\ **Last updated:** [August 29, 2026, 11:02am UTC](https://forums.unrealengine.com/t/released-level-benchmark-find-out-exactly-whats-tanking-your-levels-fps/2747249 "2026-08-29T11:02:44Z")
Ever had a level’s frame rate slump and no idea why? Was it a HISM-heavy foliage pass, a landscape material with too many texture samples, or three stationary lights stacked on the same shadow channel? Usually finding… --- ## [Mutable Sample constantly Get GPU Crash on AMD 9070? btw, RTX 4080 just work fine.](https://forums.unrealengine.com/t/mutable-sample-constantly-get-gpu-crash-on-amd-9070-btw-rtx-4080-just-work-fine/2668583)
**Author:** [@Aos2](https://forums.unrealengine.com/u/Aos2)\ **Replies:** 4\ **Last updated:** [October 26, 2025, 11:59am UTC](https://forums.unrealengine.com/t/mutable-sample-constantly-get-gpu-crash-on-amd-9070-btw-rtx-4080-just-work-fine/2668583 "2025-10-26T11:59:54Z")
GPU Crash when playing with the Mutable Sample. GPU: AMD 9070 GPU Driver Version: 25.9.1 CPU: AMD 9800X3D Unreal Version: 5.6.1 \[2025.10.25-16.25.21:159\]\[343\]LogRHI: Error: Active GPU breadcrumbs: Device 0, Pipeli… --- ## [Sudden FPS Drop, Shadow Depths Spike, and Nanite/LOD Issues ](https://forums.unrealengine.com/t/sudden-fps-drop-shadow-depths-spike-and-nanite-lod-issues/2650391)
**Author:** [@Utsav138](https://forums.unrealengine.com/u/Utsav138)\ **Replies:** 0\ **Last updated:** [August 23, 2025, 10:21pm UTC](https://forums.unrealengine.com/t/sudden-fps-drop-shadow-depths-spike-and-nanite-lod-issues/2650391 "2025-08-23T22:21:14Z")
Hi, I need some help troubleshooting performance issues in my UE5 project. A few days ago I was getting over 60 FPS, but now I’m only seeing around 20–30 FPS even though I haven’t changed any major settings. Here are the… --- ## [What does the Vulkanmemory stat group represent in a uestats recording?](https://forums.unrealengine.com/t/what-does-the-vulkanmemory-stat-group-represent-in-a-uestats-recording/2573919)
**Author:** [@Xrenyn\_the\_Mage](https://forums.unrealengine.com/u/Xrenyn_the_Mage)\ **Replies:** 0\ **Last updated:** [June 24, 2025, 4:15pm UTC](https://forums.unrealengine.com/t/what-does-the-vulkanmemory-stat-group-represent-in-a-uestats-recording/2573919 "2025-06-24T16:15:21Z")
I’m trying to figure out exactly how much VRAM my game requires and I found a promising looking tool in the Unreal Engine that I think might give me some valuable insights: Using the stat startfile and stat stopfile cons… --- ## [VMem super high and GPU Visualizer - BasePass and PrePass seem really high](https://forums.unrealengine.com/t/vmem-super-high-and-gpu-visualizer-basepass-and-prepass-seem-really-high/1810601)
**Author:** [@drewjohnson71](https://forums.unrealengine.com/u/drewjohnson71)\ **Replies:** 1\ **Last updated:** [April 19, 2024, 11:38am UTC](https://forums.unrealengine.com/t/vmem-super-high-and-gpu-visualizer-basepass-and-prepass-seem-really-high/1810601 "2024-04-19T11:38:06Z")
I’ve gone though this map very thoughly. I have set up LODs, have no UV issues, optimized the lighting, all the foliage has LODs etc. I’m getting decent fps … but what I don’t get is why I have some really high performan… --- ## [Wave Based FPS Game lags heavily after Wave 6/7. No Event Tick used, Frames go from 120fps to 50fps from wave 1 to wave 10. What can I do to improve performance?](https://forums.unrealengine.com/t/wave-based-fps-game-lags-heavily-after-wave-6-7-no-event-tick-used-frames-go-from-120fps-to-50fps-from-wave-1-to-wave-10-what-can-i-do-to-improve-performance/1510493)
**Author:** [@abstreebee](https://forums.unrealengine.com/u/abstreebee)\ **Replies:** 20\ **Last updated:** [December 9, 2023, 10:12pm UTC](https://forums.unrealengine.com/t/wave-based-fps-game-lags-heavily-after-wave-6-7-no-event-tick-used-frames-go-from-120fps-to-50fps-from-wave-1-to-wave-10-what-can-i-do-to-improve-performance/1510493 "2023-12-09T22:12:08Z")
Hello! I have a Wave Based Horde Style Boomer Shooter FPS game. I’m currently trying to optimize it for a steam demo build i’m releasing soon. I get some serious lag around wave 6/7 and it just keeps getting worse. I was… --- ## [UE5.1.1/5.2/5.3 Serious Mobile Performance bug! Must be noted right now](https://forums.unrealengine.com/t/ue5-1-1-5-2-5-3-serious-mobile-performance-bug-must-be-noted-right-now/1268050)
**Author:** [@I.PUBG.I](https://forums.unrealengine.com/u/I.PUBG.I)\ **Replies:** 51\ **Last updated:** [November 7, 2023, 8:08pm UTC](https://forums.unrealengine.com/t/ue5-1-1-5-2-5-3-serious-mobile-performance-bug-must-be-noted-right-now/1268050 "2023-11-07T20:08:52Z")
My game runs 60fps with around 60-70% gpu/cpu usage in unreal engine 5.0.3! with smooth and no issues or spikes in fps. but in ue5.1 and 5.2 the fps spikes from 60 to 30 and from 30 to 60 each single frame this is not … --- ## [URGENT PAID WORK: Looking to hire someone to remotely help me improve performance (i'll do all the work, you just tell me what to do)](https://forums.unrealengine.com/t/urgent-paid-work-looking-to-hire-someone-to-remotely-help-me-improve-performance-ill-do-all-the-work-you-just-tell-me-what-to-do/1308516)
**Author:** [@rent\_treznor](https://forums.unrealengine.com/u/rent_treznor)\ **Replies:** 2\ **Last updated:** [September 26, 2023, 4:21am UTC](https://forums.unrealengine.com/t/urgent-paid-work-looking-to-hire-someone-to-remotely-help-me-improve-performance-ill-do-all-the-work-you-just-tell-me-what-to-do/1308516 "2023-09-26T04:21:00Z")
Looking for someone to help me increase my performance live via Teamviewer. Everything was running great and then it just randomly tanked. I’d really like someone to spend a few hours with me, walk through the profi… --- ## [Cloth sim and solver taking 80ms EACH; moving causes drop to 15fps. (urgent, will pay for a solution by zelle/paypal)](https://forums.unrealengine.com/t/cloth-sim-and-solver-taking-80ms-each-moving-causes-drop-to-15fps-urgent-will-pay-for-a-solution-by-zelle-paypal/1308282)
**Author:** [@rent\_treznor](https://forums.unrealengine.com/u/rent_treznor)\ **Replies:** 11\ **Last updated:** [September 22, 2023, 11:00pm UTC](https://forums.unrealengine.com/t/cloth-sim-and-solver-taking-80ms-each-moving-causes-drop-to-15fps-urgent-will-pay-for-a-solution-by-zelle-paypal/1308282 "2023-09-22T23:00:46Z")
I’m only using cloth on one character: the player character. Suspending or resuming cloth sim has no impact. ~81ms is what it’s taking for the solver and cloth EACH. That’s 160ms; or 1/6th of a second. What can I do… --- ## [Low FPS without any obvious cause in profiling, am I missing something?](https://forums.unrealengine.com/t/low-fps-without-any-obvious-cause-in-profiling-am-i-missing-something/1230960)
**Author:** [@Ravengild](https://forums.unrealengine.com/u/Ravengild)\ **Replies:** 2\ **Last updated:** [July 17, 2023, 11:39pm UTC](https://forums.unrealengine.com/t/low-fps-without-any-obvious-cause-in-profiling-am-i-missing-something/1230960 "2023-07-17T23:39:58Z")
Hi! I’m having bad performance (60 FPS on 3070; 8-10 ms draw) without an obvious reason. This is on a landscape with some grass, the Brushify material, and some trees, so there is not a lot of optional complexity. My … --- ## [Is it possible to force RenderDoc show only relevant code?](https://forums.unrealengine.com/t/is-it-possible-to-force-renderdoc-show-only-relevant-code/635359)
**Author:** [@Def0rp](https://forums.unrealengine.com/u/Def0rp)\ **Replies:** 1\ **Last updated:** [February 18, 2023, 5:41pm UTC](https://forums.unrealengine.com/t/is-it-possible-to-force-renderdoc-show-only-relevant-code/635359 "2023-02-18T17:41:13Z")
Using RenderDoc in other engines, for the particular drawcall i always got pretty compact and easy to read shader code. Not 100% sure but i think all of that code was actually used in that drawcall. In Unreal i always g… --- ## [easiest way to log and save basic GPU stats in a file?](https://forums.unrealengine.com/t/easiest-way-to-log-and-save-basic-gpu-stats-in-a-file/754917)
**Author:** [@trezznor](https://forums.unrealengine.com/u/trezznor)\ **Replies:** 0\ **Last updated:** [January 22, 2023, 9:58pm UTC](https://forums.unrealengine.com/t/easiest-way-to-log-and-save-basic-gpu-stats-in-a-file/754917 "2023-01-22T21:58:03Z")
I need to log the basic GPU stats (computation times) in a file while testing in the unreal engine editor so that I can analize them afterwards. What would be the easiest way of doing that? I’m using UE 5.1 no prefere… --- ## [Video memory has been exhausted - using Oculus Link](https://forums.unrealengine.com/t/video-memory-has-been-exhausted-using-oculus-link/681545)
**Author:** [@Fele](https://forums.unrealengine.com/u/Fele)\ **Replies:** 2\ **Last updated:** [November 7, 2022, 7:56am UTC](https://forums.unrealengine.com/t/video-memory-has-been-exhausted-using-oculus-link/681545 "2022-11-07T07:56:24Z")
Hello, I am working in UE5 on some blueprints for VR which I am testing with Oculus Link in an empty project which is even set to mobile/scalable. After a couple of VR-Previews, using Oculus Link USB, my VRAM fills up … --- ## [How Nvidia A100 Runs UE5](https://forums.unrealengine.com/t/how-nvidia-a100-runs-ue5/658941)
**Author:** [@298733](https://forums.unrealengine.com/u/298733)\ **Replies:** 2\ **Last updated:** [September 30, 2022, 10:08am UTC](https://forums.unrealengine.com/t/how-nvidia-a100-runs-ue5/658941 "2022-09-30T10:08:56Z")
Packaged Windows version Do not use cloud providers Using the purchased Nvidia A100 server may be a driver problem But I don’t know how to install the driver that can run UE5 Error message: Running the engine requir… --- ## [Running profilegpuhitches opens several tabs every second](https://forums.unrealengine.com/t/running-profilegpuhitches-opens-several-tabs-every-second/628446)
**Author:** [@ChimiestChanga](https://forums.unrealengine.com/u/ChimiestChanga)\ **Replies:** 1\ **Last updated:** [August 14, 2022, 11:02pm UTC](https://forums.unrealengine.com/t/running-profilegpuhitches-opens-several-tabs-every-second/628446 "2022-08-14T23:02:50Z")
Hi everyone, I’m new to this forum but I’ve recently been trying to understand why I’m getting extremely low FPS in simple levels like this. Sometimes the editor will drop to 5 FPS and take a few seconds to get back up t… --- ## [How to make Unreal use GPU instead of CPU on Daylight /Outside game levels ? #UE5](https://forums.unrealengine.com/t/how-to-make-unreal-use-gpu-instead-of-cpu-on-daylight-outside-game-levels-ue5/617209)
**Author:** [@cemsend1](https://forums.unrealengine.com/u/cemsend1)\ **Replies:** 2\ **Last updated:** [July 30, 2022, 11:42am UTC](https://forums.unrealengine.com/t/how-to-make-unreal-use-gpu-instead-of-cpu-on-daylight-outside-game-levels-ue5/617209 "2022-07-30T11:42:50Z")
Hi, I’m new to all of this and have been learning and building a game for almost a year now. Started when Unreal Engine Early Access 5 came out. Now using 5.0.3. I’m a complete noob so please speak to me like you are spe… --- ## [How to Capture a Gpu Frame on Mac Editor by XCode](https://forums.unrealengine.com/t/how-to-capture-a-gpu-frame-on-mac-editor-by-xcode/505975)
**Author:** [@cheng.jin](https://forums.unrealengine.com/u/cheng.jin)\ **Replies:** 1\ **Last updated:** [July 22, 2022, 3:46am UTC](https://forums.unrealengine.com/t/how-to-capture-a-gpu-frame-on-mac-editor-by-xcode/505975 "2022-07-22T03:46:16Z")
Hey, everyone. I have a UE4 game and I want to capture the Editor’s GPU frame on Mac platform. However, When I hit the “Capture GPU Workload” button in Xcode tool bar, I only get the Editor UI render states, without all… --- ## [Updating instance custom data each frame is slow. Any way to make it faster?](https://forums.unrealengine.com/t/updating-instance-custom-data-each-frame-is-slow-any-way-to-make-it-faster/593376)
**Author:** [@kurzemnieks](https://forums.unrealengine.com/u/kurzemnieks)\ **Replies:** 0\ **Last updated:** [June 29, 2022, 1:46pm UTC](https://forums.unrealengine.com/t/updating-instance-custom-data-each-frame-is-slow-any-way-to-make-it-faster/593376 "2022-06-29T13:46:37Z")
I have a crowd system with ~20k people. It’s based on Hierarchical Instanced Static Mesh component and using bone animation baked to textures. It is running quite fast, but I want to update Custom Float Data each fr… --- ## [Optimization Challenge Videos](https://forums.unrealengine.com/t/optimization-challenge-videos/533552)
**Author:** [@TrentAtwood](https://forums.unrealengine.com/u/TrentAtwood)\ **Replies:** 0\ **Last updated:** [April 19, 2022, 2:43pm UTC](https://forums.unrealengine.com/t/optimization-challenge-videos/533552 "2022-04-19T14:43:14Z")
This link provides access to a series of videos titled “Optimization Challenge” which is the video version of a hands-on training session offered by Epic Games. The Optimization Challenge focuses on GPU profiling and op… --- ## [GPU running on 100%](https://forums.unrealengine.com/t/gpu-running-on-100/477570)
**Author:** [@GablerGames](https://forums.unrealengine.com/u/GablerGames)\ **Replies:** 19\ **Last updated:** [January 21, 2021, 1:01pm UTC](https://forums.unrealengine.com/t/gpu-running-on-100/477570 "2021-01-21T13:01:57Z")
Hey, i want to learn how i can optimizing my GPU in UE4 but i dont know how i can fix my Duration. I have only a landcape with directionalLight etc: My Scene Duration is to much with 52.82 ms … How i can learn t… --- ## [FPS drop in regular interval](https://forums.unrealengine.com/t/fps-drop-in-regular-interval/463274)
**Author:** [@Kubus.Rozpruwacz](https://forums.unrealengine.com/u/Kubus.Rozpruwacz)\ **Replies:** 0\ **Last updated:** [April 3, 2020, 5:05pm UTC](https://forums.unrealengine.com/t/fps-drop-in-regular-interval/463274 "2020-04-03T17:05:42Z")
Hello everyone! I’ve been struggling for several hours with strange problem. I have small lag in editor ideally every 5 seconds. I tried to figure it out with profiler: On the yellow (Threads) and pink (GPU) onl… --- ## [Optimisation, GPU visualizer help](https://forums.unrealengine.com/t/optimisation-gpu-visualizer-help/436034)
**Author:** [@DavidM](https://forums.unrealengine.com/u/DavidM)\ **Replies:** 2\ **Last updated:** [August 26, 2019, 8:38pm UTC](https://forums.unrealengine.com/t/optimisation-gpu-visualizer-help/436034 "2019-08-26T20:38:42Z")
I’m trying to optimise the game but I can’t figure out what’s slowing it down. So to start with, the profiler claims a frame takes 5ms to render, which would be 177fps, but the editor actually takes 38ms. When I play the… --- ## [gpu profiler show two fogs instead one](https://forums.unrealengine.com/t/gpu-profiler-show-two-fogs-instead-one/413732)
**Author:** [@anonymous\_user\_d973a2dd](https://forums.unrealengine.com/u/anonymous_user_d973a2dd)\ **Replies:** 1\ **Last updated:** [May 21, 2019, 7:03am UTC](https://forums.unrealengine.com/t/gpu-profiler-show-two-fogs-instead-one/413732 "2019-05-21T07:03:37Z")
Hi, first of all let me tell that actually i’m using the nvidia vrworks branch of ue 4.17, but i think it is irrelevant to the question. I’m wondering why the gpu profiler is showing twice some stats about the exponent… --- ## [Divice Profiler on mobile](https://forums.unrealengine.com/t/divice-profiler-on-mobile/438538)
**Author:** [@FastD](https://forums.unrealengine.com/u/FastD)\ **Replies:** 0\ **Last updated:** [November 29, 2018, 11:12am UTC](https://forums.unrealengine.com/t/divice-profiler-on-mobile/438538 "2018-11-29T11:12:39Z")
I have a question about correct profile naming wich engine can recognize and apply. I try create and save some profile with specific gpu and no luck. Can anyone explain about it ? --- ## [what is beginrenderingscenecolor mean?](https://forums.unrealengine.com/t/what-is-beginrenderingscenecolor-mean/430367)
**Author:** [@AndyWeng](https://forums.unrealengine.com/u/AndyWeng)\ **Replies:** 0\ **Last updated:** [July 27, 2018, 9:13am UTC](https://forums.unrealengine.com/t/what-is-beginrenderingscenecolor-mean/430367 "2018-07-27T09:13:23Z")
Sometimes it takes a long time in the beginrenderingscenecolor section almost 6.51-12.5ms. I don’t know how to reduce the time of beginrenderingscenecolor. Who knows what is this section doing? and how to reduce the ti… --- ## [How to reduce BasePass Dynamic? \[Oculus VR\]](https://forums.unrealengine.com/t/how-to-reduce-basepass-dynamic-oculus-vr/422957)
**Author:** [@anonymous\_user\_605b1ae7](https://forums.unrealengine.com/u/anonymous_user_605b1ae7)\ **Replies:** 15\ **Last updated:** [April 19, 2018, 11:16am UTC](https://forums.unrealengine.com/t/how-to-reduce-basepass-dynamic-oculus-vr/422957 "2018-04-19T11:16:51Z")
Hi, Can someone explain me what I need to fix to higher my FPS based on this screenshot? Sidestory: My shadows are disabled, my lights are removed, my procedural meshes are all set ‘static’, my components in the room … --- ## [GPU time is huge different between "stat gpu" and "stat unit"](https://forums.unrealengine.com/t/gpu-time-is-huge-different-between-stat-gpu-and-stat-unit/416452)
**Author:** [@izikhuang](https://forums.unrealengine.com/u/izikhuang)\ **Replies:** 1\ **Last updated:** [February 5, 2018, 8:18am UTC](https://forums.unrealengine.com/t/gpu-time-is-huge-different-between-stat-gpu-and-stat-unit/416452 "2018-02-05T08:18:23Z")
Hi Everyone, I’m doing the profile thing for my project. when i use command “stat unit” and “stat gpu”. the gpu time is huge different. eg: gpu total time in “stat gpu” is 33ms. but gpu time is 170ms in “stat unit” My … --- ## [Something holding back GPU to 30fps](https://forums.unrealengine.com/t/something-holding-back-gpu-to-30fps/408659)
**Author:** [@anonymous\_user\_0b745163](https://forums.unrealengine.com/u/anonymous_user_0b745163)\ **Replies:** 2\ **Last updated:** [November 7, 2017, 2:35pm UTC](https://forums.unrealengine.com/t/something-holding-back-gpu-to-30fps/408659 "2017-11-07T14:35:13Z")
Hi, Something is holding back my GPU to 30fps. I have tried: r.VSync 0 r.VSyncEditor 0 t.MaxFPS 120 Unchecking Project Settings \> Engine \> General Settings \> Framerate \> Smooth Frame Rate Turning off Vertical sync fo… --- ## [IndirectCapsuleShadows taking up 13ms even though there are no skeletal meshes casting shadows](https://forums.unrealengine.com/t/indirectcapsuleshadows-taking-up-13ms-even-though-there-are-no-skeletal-meshes-casting-shadows/402898)
**Author:** [@anonymous\_user\_6cbbd05b](https://forums.unrealengine.com/u/anonymous_user_6cbbd05b)\ **Replies:** 1\ **Last updated:** [September 4, 2017, 8:11am UTC](https://forums.unrealengine.com/t/indirectcapsuleshadows-taking-up-13ms-even-though-there-are-no-skeletal-meshes-casting-shadows/402898 "2017-09-04T08:11:55Z")
Hi, My project has 3 skeletal meshes in this particular level (including 2 motion controller skeletal meshes), all of them have Cast Shadow set to false and yet i get IndirectCapsuleShadows taking up 13 ms. Am i misunde… --- ## [GPU Profiler Window doesn't open](https://forums.unrealengine.com/t/gpu-profiler-window-doesnt-open/398237)
**Author:** [@daveSchoneveld](https://forums.unrealengine.com/u/daveSchoneveld)\ **Replies:** 1\ **Last updated:** [August 3, 2017, 7:55pm UTC](https://forums.unrealengine.com/t/gpu-profiler-window-doesnt-open/398237 "2017-08-03T19:55:30Z")
Cmd: r.ProfileGPU.ShowUI 1 r.ProfileGPU.ShowUI = “1” Shift+ctrl also doesn’t work. Window just doesn’t open. I’ve used the profiler before, I’ve checked to see if its off screen somewhere, also checked to see if its … [Next page](https://forums.unrealengine.com/tag/gpu-profiling/10025.md?match_all_tags=true&page=1&tags%5B%5D=GPU-Profiling)