# \#CPU **URL:** https://forums.unrealengine.com/tag/cpu/684.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [9950X3d vs 13900k/14900k](https://forums.unrealengine.com/t/9950x3d-vs-13900k-14900k/2724593)
**Author:** [@DentonJC](https://forums.unrealengine.com/u/DentonJC)\ **Replies:** 1\ **Last updated:** [June 27, 2026, 1:56pm UTC](https://forums.unrealengine.com/t/9950x3d-vs-13900k-14900k/2724593 "2026-06-27T13:56:42Z")
I’m currently using a 13900k and debating moving to a 9950x3d or 9950x3D2. I’ve seen a few benchmarks comparing shader compile and code compile times, but I’m more curious about general editor smoothness, multiplayer per… --- ## [\[REQUEST\] Official v18 custom installer that does not auto update to v19](https://forums.unrealengine.com/t/request-official-v18-custom-installer-that-does-not-auto-update-to-v19/2680521)
**Author:** [@floyd\_eg](https://forums.unrealengine.com/u/floyd_eg)\ **Replies:** 2\ **Last updated:** [February 12, 2026, 10:24am UTC](https://forums.unrealengine.com/t/request-official-v18-custom-installer-that-does-not-auto-update-to-v19/2680521 "2026-02-12T10:24:48Z")
Epic Games silently modified the minimum system requirements for the launcher without notice and just after this issue was reported, so the bug published on that thread will never be solved. The new minimum system requi… --- ## [Optimization for Execute Background Task - Question](https://forums.unrealengine.com/t/optimization-for-execute-background-task-question/2695159)
**Author:** [@Clinker](https://forums.unrealengine.com/u/Clinker)\ **Replies:** 0\ **Last updated:** [January 27, 2026, 3:21am UTC](https://forums.unrealengine.com/t/optimization-for-execute-background-task-question/2695159 "2026-01-27T03:21:47Z")
Hi everyone, In Unreal Insights, ExecuteBackgroundTask is taking a noticeable amount of time, and during WaitForTask it looks like background tasks are still executing. Most of the cost appears to come from texture stre… --- ## [PC configuration](https://forums.unrealengine.com/t/pc-configuration/2653071)
**Author:** [@Franck\_Unreal](https://forums.unrealengine.com/u/Franck_Unreal)\ **Replies:** 1\ **Last updated:** [September 4, 2025, 4:18am UTC](https://forums.unrealengine.com/t/pc-configuration/2653071 "2025-09-04T04:18:27Z")
Hello I’m working with a Laptop msi with an intel core i7 and an nvidia Rtx 3050 and also with 32 Go RAM. I did a simple test with a movable sphere and its texture which takes off over a template plane with its rock mat… --- ## [CPU profiling questions](https://forums.unrealengine.com/t/cpu-profiling-questions/2568891)
**Author:** [@PrairieDog116](https://forums.unrealengine.com/u/PrairieDog116)\ **Replies:** 0\ **Last updated:** [June 21, 2025, 6:17am UTC](https://forums.unrealengine.com/t/cpu-profiling-questions/2568891 "2025-06-21T06:17:22Z")
So my game runs at around 90-120FPS most of the time, but I think I’ve made this CPU heavy as when I profile I get frames and ranges of frames that take around 1-1.4 seconds. It looks like this is mostly from “WaitForTa… --- ## [Fortnite crashing, crashes during load in (possible fix for some) ](https://forums.unrealengine.com/t/fortnite-crashing-crashes-during-load-in-possible-fix-for-some/2299379)
**Author:** [@ItzHaptics](https://forums.unrealengine.com/u/ItzHaptics)\ **Replies:** 0\ **Last updated:** [January 23, 2025, 3:01pm UTC](https://forums.unrealengine.com/t/fortnite-crashing-crashes-during-load-in-possible-fix-for-some/2299379 "2025-01-23T15:01:09Z")
(Skip to last paragraph for my main issue that solved my crashing) Hey, I am currently running high end components on my pc never had a crash till about December 2024 and progressively got worse. Was unsure on how to f… --- ## [Hardware Optimization for Maximum Performance in Unreal Engine 5](https://forums.unrealengine.com/t/hardware-optimization-for-maximum-performance-in-unreal-engine-5/2049073)
**Author:** [@leejunjee](https://forums.unrealengine.com/u/leejunjee)\ **Replies:** 1\ **Last updated:** [October 2, 2024, 11:48am UTC](https://forums.unrealengine.com/t/hardware-optimization-for-maximum-performance-in-unreal-engine-5/2049073 "2024-10-02T11:48:30Z")
Introduction: Hi everyone, I am exploring how to optimize hardware when using Unreal Engine 5. Specifically, I am looking for ways to fully utilize hardware resources (GPU, CPU, RAM) to develop and run UE5 projects as s… --- ## [Is a NVME SSD worth it for Unreal Engine?](https://forums.unrealengine.com/t/is-a-nvme-ssd-worth-it-for-unreal-engine/424938)
**Author:** [@anonymous\_user\_c1368c2f](https://forums.unrealengine.com/u/anonymous_user_c1368c2f)\ **Replies:** 9\ **Last updated:** [August 1, 2024, 11:50am UTC](https://forums.unrealengine.com/t/is-a-nvme-ssd-worth-it-for-unreal-engine/424938 "2024-08-01T11:50:49Z")
Hey guys, I will soon buy a new computer because my PC just does not have enough power. But I’m not sure if I should buy a m.2 NVME ssd or a normal Sata SSD. According to the Internet, NVME SSD’s are only wet if you wor… --- ## [Intel Workstation Build for UE5 - Powerful enough? Limitations? ](https://forums.unrealengine.com/t/intel-workstation-build-for-ue5-powerful-enough-limitations/1774920)
**Author:** [@Cristianmartcg](https://forums.unrealengine.com/u/Cristianmartcg)\ **Replies:** 3\ **Last updated:** [March 28, 2024, 7:03am UTC](https://forums.unrealengine.com/t/intel-workstation-build-for-ue5-powerful-enough-limitations/1774920 "2024-03-28T07:03:03Z")
Hello guys, Couldn’t find an IT/Hardware category in the forum, so posting here. Hope that’s alright. I am a professional working for the entertainment industry (feature film) as an environment artist, and I am upgradi… --- ## [Build for beginner UE5 : question about a specific CPU](https://forums.unrealengine.com/t/build-for-beginner-ue5-question-about-a-specific-cpu/1680053)
**Author:** [@Angel\_Anael](https://forums.unrealengine.com/u/Angel_Anael)\ **Replies:** 2\ **Last updated:** [February 11, 2024, 7:34am UTC](https://forums.unrealengine.com/t/build-for-beginner-ue5-question-about-a-specific-cpu/1680053 "2024-02-11T07:34:07Z")
Hello everyone :slight\_smile: I’m about to get a new PC to begin serious business in Unreal Engine for game development and I’m considering a build with: CPU i7 12700 KF Asus 4070 32gb of DDR4 RAM 2 To SSD The person… --- ## [Lumen and GPU ](https://forums.unrealengine.com/t/lumen-and-gpu/1460220)
**Author:** [@elcumanff](https://forums.unrealengine.com/u/elcumanff)\ **Replies:** 2\ **Last updated:** [December 5, 2023, 2:50pm UTC](https://forums.unrealengine.com/t/lumen-and-gpu/1460220 "2023-12-05T14:50:52Z")
Hello everyone! This is my first time in forum sorry for any mistakes. My problem and my question is like that; When i was working in UE5 my fps is like 20 30 but when i was checking my gpu or cpu usage it’s like betwee… --- ## [Is it possible to limit the cpu usage of the lightmass build?](https://forums.unrealengine.com/t/is-it-possible-to-limit-the-cpu-usage-of-the-lightmass-build/390204)
**Author:** [@anonymous\_user\_0e0dcd18](https://forums.unrealengine.com/u/anonymous_user_0e0dcd18)\ **Replies:** 4\ **Last updated:** [December 2, 2023, 10:09pm UTC](https://forums.unrealengine.com/t/is-it-possible-to-limit-the-cpu-usage-of-the-lightmass-build/390204 "2023-12-02T22:09:41Z")
Hi, I have a laptop that I use to build lighting in my scenes, and I’d like to keep the cpu temp lower than it is for the duration of time spent baking lightmass. Would it be possible to limit the cpu usage to something… --- ## [How many CPU cores does UE5 support at most?](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052)
**Author:** [@Anonymous\_122143d9bc86a7ff91e557cb8ab0143b](https://forums.unrealengine.com/u/Anonymous_122143d9bc86a7ff91e557cb8ab0143b)\ **Replies:** 4\ **Last updated:** [October 31, 2023, 7:15am UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052 "2023-10-31T07:15:15Z")
Hey guys.I’m recently considering how to build my next PC for UE5 and Houdini rendering.Does UE5 support EPYC 9754x2,up to 256 core 512 threads?If not ,can it support EPYC 9654x2,up to 192 cores 384 threads?If it cannot … --- ## [How to spawn particles on a surface with CPU Sim?](https://forums.unrealengine.com/t/how-to-spawn-particles-on-a-surface-with-cpu-sim/1314337)
**Author:** [@DanceDown](https://forums.unrealengine.com/u/DanceDown)\ **Replies:** 0\ **Last updated:** [September 27, 2023, 3:23pm UTC](https://forums.unrealengine.com/t/how-to-spawn-particles-on-a-surface-with-cpu-sim/1314337 "2023-09-27T15:23:16Z")
Hey, I created a particle system with an emitter on GPU Compute and then used the static mesh location to let my particles spawn on the surface of a sphere (radius: 100.000.000). But there is a feature (synonym for bug)… --- ## ["Read Render Target Raw Pixel" Not working?](https://forums.unrealengine.com/t/read-render-target-raw-pixel-not-working/1259983)
**Author:** [@The\_untextured](https://forums.unrealengine.com/u/The_untextured)\ **Replies:** 2\ **Last updated:** [August 13, 2023, 11:17pm UTC](https://forums.unrealengine.com/t/read-render-target-raw-pixel-not-working/1259983 "2023-08-13T23:17:09Z")
Hello! I am having an issue with the “Read Render Target Raw Pixel” node, arranged as shown below, where it will always return (1, 0, 0, 1) no matter what I do to it. I tried changing the “Clear Color” setting, the … --- ## [Using a texture to handle gases in the atmosphere.](https://forums.unrealengine.com/t/using-a-texture-to-handle-gases-in-the-atmosphere/1251532)
**Author:** [@The\_untextured](https://forums.unrealengine.com/u/The_untextured)\ **Replies:** 3\ **Last updated:** [August 5, 2023, 8:07pm UTC](https://forums.unrealengine.com/t/using-a-texture-to-handle-gases-in-the-atmosphere/1251532 "2023-08-05T20:07:11Z")
Hey all! I am making a game where I want one of the features to be air and land pollution, however, I have a dilemma. How do I do it? An inspiration for the mechanic is Factorio: (Image source: Pollution - Factorio … --- ## [Is my system okay for UE5.2?](https://forums.unrealengine.com/t/is-my-system-okay-for-ue5-2/1214450)
**Author:** [@Cody\_McMillan](https://forums.unrealengine.com/u/Cody_McMillan)\ **Replies:** 8\ **Last updated:** [July 2, 2023, 8:06am UTC](https://forums.unrealengine.com/t/is-my-system-okay-for-ue5-2/1214450 "2023-07-02T08:06:06Z")
Howdy folks. I recently got a new laptop, and since I was on a budget I know it isnt the most powerful gaming system in the world but is it okay for UE5.2? I'm NOT aiming for 4k or anything, but I will be working on … --- ## [issue in UE5 with high power cpu usage](https://forums.unrealengine.com/t/issue-in-ue5-with-high-power-cpu-usage/839354)
**Author:** [@ahingel](https://forums.unrealengine.com/u/ahingel)\ **Replies:** 0\ **Last updated:** [April 2, 2023, 8:41pm UTC](https://forums.unrealengine.com/t/issue-in-ue5-with-high-power-cpu-usage/839354 "2023-04-02T20:41:41Z")
hello, i only have this problem on ue5 , not in ue4. and i cant use it :frowning: even on an empty project my cpu goes very high and make my fans spin super fast im dont have very good knowledge of unreal so if someone… --- ## [5800x3d vs 5900x](https://forums.unrealengine.com/t/5800x3d-vs-5900x/684833)
**Author:** [@anonymous\_user\_0a6d1062](https://forums.unrealengine.com/u/anonymous_user_0a6d1062)\ **Replies:** 0\ **Last updated:** [November 5, 2022, 10:28pm UTC](https://forums.unrealengine.com/t/5800x3d-vs-5900x/684833 "2022-11-05T22:28:09Z")
Hi, since using ue5 my fps is halfed. i work on big open world atm got 20fps. 3600 ryzen 2070 super 32gb ram 2667mhz i dont know which cpu is better just for getting more fps in the editor. Idc baking etc. --- ## [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… --- ## [UE4 Application crashes some times with Critical error SIGSEGV12](https://forums.unrealengine.com/t/ue4-application-crashes-some-times-with-critical-error-sigsegv12/581273)
**Author:** [@rkayyott](https://forums.unrealengine.com/u/rkayyott)\ **Replies:** 1\ **Last updated:** [June 20, 2022, 11:26am UTC](https://forums.unrealengine.com/t/ue4-application-crashes-some-times-with-critical-error-sigsegv12/581273 "2022-06-20T11:26:09Z")
We are running UE4.27 game as a linux package in a container. The game fails around 10% of times with the below issue. I wanted to know what could be causing this crash. If there is any to fix for this issue. Also, At … --- ## [Really Bad Hitches on Specific Computers](https://forums.unrealengine.com/t/really-bad-hitches-on-specific-computers/446232)
**Author:** [@AliceHalley](https://forums.unrealengine.com/u/AliceHalley)\ **Replies:** 4\ **Last updated:** [May 3, 2022, 7:32am UTC](https://forums.unrealengine.com/t/really-bad-hitches-on-specific-computers/446232 "2022-05-03T07:32:37Z")
I am making a game for a university project. I am at the stage where I am optimizing it, and it needs to be ready to be presented at an event in a couple of months times. I have run into an issue that the IT department i… --- ## [My CPU hits 100% usage on opening a project](https://forums.unrealengine.com/t/my-cpu-hits-100-usage-on-opening-a-project/466153)
**Author:** [@Pyr0piggy](https://forums.unrealengine.com/u/Pyr0piggy)\ **Replies:** 11\ **Last updated:** [April 21, 2022, 2:04am UTC](https://forums.unrealengine.com/t/my-cpu-hits-100-usage-on-opening-a-project/466153 "2022-04-21T02:04:22Z")
I’ve searched around the forums and have found similar problems but all different enough that i couldn’t find a clear answer. I’m brand new to UE4, so new that i cant even open a starter project.Opening a project freeze… --- ## [My UE4 editor experience major hitching problems when just coding in editor or even testing the game](https://forums.unrealengine.com/t/my-ue4-editor-experience-major-hitching-problems-when-just-coding-in-editor-or-even-testing-the-game/463655)
**Author:** [@BradyMonster](https://forums.unrealengine.com/u/BradyMonster)\ **Replies:** 4\ **Last updated:** [September 2, 2021, 11:02am UTC](https://forums.unrealengine.com/t/my-ue4-editor-experience-major-hitching-problems-when-just-coding-in-editor-or-even-testing-the-game/463655 "2021-09-02T11:02:57Z")
The hitching is not only effecting fps but as been effecting my game tick as well. Currently in my project I’m having a hard time making the game with the game tick messed up and it has been a very frustrating issue The… --- ## [Extremely high cpu usage](https://forums.unrealengine.com/t/extremely-high-cpu-usage/486964)
**Author:** [@Joja2k](https://forums.unrealengine.com/u/Joja2k)\ **Replies:** 0\ **Last updated:** [August 2, 2021, 9:15pm UTC](https://forums.unrealengine.com/t/extremely-high-cpu-usage/486964 "2021-08-02T21:15:16Z")
Hi everyone, I am very confused about high CPU usage on my finished and packaged game, when the game is running in the background CPU usage jumps between 55% and 65%. Can I somehow lower this? My specs; AMD Ryzen 5 160… --- ## [起動するたびにシェーダーをコンパイルする](https://forums.unrealengine.com/t/topic/486020)
**Author:** [@AsutoraGG](https://forums.unrealengine.com/u/AsutoraGG)\ **Replies:** 1\ **Last updated:** [July 11, 2021, 8:52am UTC](https://forums.unrealengine.com/t/topic/486020 "2021-07-11T08:52:47Z")
UE5になってから(前もそうだったかもしれないけど)起動するたびにシェーダーをコンパイルされます。これって絶対しなきゃいけないのですか?そこそこいいスペックGPUはRX5700xt)なんですけどCPU使用率マックスになってめっちゃPCから音がして怖いのでアプリを閉じてるんですけどどうすればいいですか? --- ## [Anyone know why CPU usage at 100% during downloads](https://forums.unrealengine.com/t/anyone-know-why-cpu-usage-at-100-during-downloads/484918)
**Author:** [@Phil\_Cahill](https://forums.unrealengine.com/u/Phil_Cahill)\ **Replies:** 1\ **Last updated:** [June 15, 2021, 10:30am UTC](https://forums.unrealengine.com/t/anyone-know-why-cpu-usage-at-100-during-downloads/484918 "2021-06-15T10:30:21Z")
Hi, I’m currently downloading Valley of the ancient and my CPU is at 100% making my system very unresponsive. I have closed the launcher and rebooted system but the second the download starts CPU usage maxed out. Syste… --- ## [CPU Overheating when building light](https://forums.unrealengine.com/t/cpu-overheating-when-building-light/305617)
**Author:** [@The\_Shane](https://forums.unrealengine.com/u/The_Shane)\ **Replies:** 6\ **Last updated:** [June 8, 2021, 2:11pm UTC](https://forums.unrealengine.com/t/cpu-overheating-when-building-light/305617 "2021-06-08T14:11:43Z")
As the title says, my CPU temperatures are breaking 100C (at about 85% capacity) when trying to build light for a level that’s only got 440 actors in it, almost all of which are just brick walls from Manufactura K4’s Anc… --- ## [Unreal Engine is using 100% of my CPU](https://forums.unrealengine.com/t/unreal-engine-is-using-100-of-my-cpu/296159)
**Author:** [@alobf](https://forums.unrealengine.com/u/alobf)\ **Replies:** 10\ **Last updated:** [May 16, 2021, 7:04am UTC](https://forums.unrealengine.com/t/unreal-engine-is-using-100-of-my-cpu/296159 "2021-05-16T07:04:46Z")
Hello When I open the Unreal Engine Launcher it uses 30% of my CPU, and when I move the window around it goes up to 100%!!! When I open the editor it gets much worse, the CPU stays almost at 100% of usage even though I… --- ## [Using integrated GPU with a dedicated GPU?](https://forums.unrealengine.com/t/using-integrated-gpu-with-a-dedicated-gpu/483172)
**Author:** [@Malangen](https://forums.unrealengine.com/u/Malangen)\ **Replies:** 1\ **Last updated:** [May 10, 2021, 12:11pm UTC](https://forums.unrealengine.com/t/using-integrated-gpu-with-a-dedicated-gpu/483172 "2021-05-10T12:11:40Z")
In short, no it will not give it a facelift. 980ti is still a pretty capable GPU. You may see a major performance boost by just upgrading CPU & RAM, though. [Next page](https://forums.unrealengine.com/tag/cpu/684.md?match_all_tags=true&page=1&tags%5B%5D=CPU)