# \#lag **URL:** https://forums.unrealengine.com/tag/lag/551.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Severe FPS / Performance Issues in Published UEFN Maps Since Update 42.10](https://forums.unrealengine.com/t/severe-fps-performance-issues-in-published-uefn-maps-since-update-42-10/2762983)
**Author:** [@TrainingMaps](https://forums.unrealengine.com/u/TrainingMaps)\ **Replies:** 3\ **Last updated:** [October 13, 2026, 2:00am UTC](https://forums.unrealengine.com/t/severe-fps-performance-issues-in-published-uefn-maps-since-update-42-10/2762983 "2026-10-13T02:00:20Z")
Summary Hello, Since the recent Fortnite/UEFN 42.10 update, we have been experiencing severe performance issues in two of our published maps. Affected Islands: ZB Training Island Code: 3852-7380-9907 Crosshair Pract… --- ## [FPS drops when rapidly switching weapons in Creative/UEFN](https://forums.unrealengine.com/t/fps-drops-when-rapidly-switching-weapons-in-creative-uefn/2739350)
**Author:** [@guidacio](https://forums.unrealengine.com/u/guidacio)\ **Replies:** 1\ **Last updated:** [August 12, 2026, 5:00pm UTC](https://forums.unrealengine.com/t/fps-drops-when-rapidly-switching-weapons-in-creative-uefn/2739350 "2026-08-12T17:00:15Z")
Summary Rapidly switching between any weapons causes noticeable FPS drops and stuttering in Fortnite Creative and UEFN sessions. The issue occurs even in very simple islands, without Verse scripts or gameplay logic react… --- ## [My editor and blueprint UI lags but not the viewport or game](https://forums.unrealengine.com/t/my-editor-and-blueprint-ui-lags-but-not-the-viewport-or-game/2704325)
**Author:** [@BluAstronaut](https://forums.unrealengine.com/u/BluAstronaut)\ **Replies:** 1\ **Last updated:** [March 9, 2026, 2:36pm UTC](https://forums.unrealengine.com/t/my-editor-and-blueprint-ui-lags-but-not-the-viewport-or-game/2704325 "2026-03-09T14:36:27Z")
For some reason that I cannot determine, just moving my mouse cursor in the UI and not the viewport makes the framerate drop. It also does this in the blueprint graph. I have disabled reduce cpu usage in background setti… --- ## [Hogwarts legacy stuttering ](https://forums.unrealengine.com/t/hogwarts-legacy-stuttering/2688299)
**Author:** [@4MonkeyButtGamer](https://forums.unrealengine.com/u/4MonkeyButtGamer)\ **Replies:** 1\ **Last updated:** [December 31, 2025, 11:16pm UTC](https://forums.unrealengine.com/t/hogwarts-legacy-stuttering/2688299 "2025-12-31T23:16:21Z")
Summary So i got Hogwarts legacy when it was free on epic store, now while it recommends me on normal settings, this happens no matter what settings i have it on. So after the first knight fight when its all dark and al… --- ## [Keep engine scalability settings in build?](https://forums.unrealengine.com/t/keep-engine-scalability-settings-in-build/342855)
**Author:** [@RubDawg](https://forums.unrealengine.com/u/RubDawg)\ **Replies:** 3\ **Last updated:** [November 19, 2025, 10:33am UTC](https://forums.unrealengine.com/t/keep-engine-scalability-settings-in-build/342855 "2025-11-19T10:33:27Z")
Hi, I just build my game (for Mac) and it lags like crazy. In the editor my engine scalability settings are set to lower, medium for most things. I was wondering if it was possible to keep these settings in the build. I … --- ## [Unreal Engine 5.5 Editor UI Lags](https://forums.unrealengine.com/t/unreal-engine-5-5-editor-ui-lags/2471681)
**Author:** [@RishiKrJhaUE](https://forums.unrealengine.com/u/RishiKrJhaUE)\ **Replies:** 1\ **Last updated:** [September 14, 2025, 1:26pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-5-editor-ui-lags/2471681 "2025-09-14T13:26:54Z")
Unreal Engine 5.5 Editor UI Lags Badly (Viewport Fine, Game Runs Fine) – Need Help! Hi all, I’m running Unreal Engine 5.5 on a new laptop and I’ve hit a frustrating issue: :green\_circle: Viewport is smooth … --- ## [Unreal Engine 5 ](https://forums.unrealengine.com/t/unreal-engine-5/2554076)
**Author:** [@Darkhi12398](https://forums.unrealengine.com/u/Darkhi12398)\ **Replies:** 2\ **Last updated:** [August 25, 2025, 1:37am UTC](https://forums.unrealengine.com/t/unreal-engine-5/2554076 "2025-08-25T01:37:10Z")
I would like to know why UE5 is too demanding on the CPU. Because my PC cannot handle it and it makes me wary to play games that are built on the engine like Witcher 4, Oblivion Remake, Silent Hill 2, Star Wars: Jedi Sur… --- ## [Need help finding what's slowing this scene down](https://forums.unrealengine.com/t/need-help-finding-whats-slowing-this-scene-down/2644858)
**Author:** [@MiitsuOfficial](https://forums.unrealengine.com/u/MiitsuOfficial)\ **Replies:** 1\ **Last updated:** [August 18, 2025, 5:12am UTC](https://forums.unrealengine.com/t/need-help-finding-whats-slowing-this-scene-down/2644858 "2025-08-18T05:12:56Z")
Here is an image from Unreal insights. The frame is 2112. I did nothing but start an insight and just sit at the editor. The editor was chugging around 2fps. I’m using Unreal for rendering animations, not (at the moment)… --- ## [Entering Focus on Windowed View Yields High RHIT Time](https://forums.unrealengine.com/t/entering-focus-on-windowed-view-yields-high-rhit-time/2566973)
**Author:** [@MiscellaneousMyth](https://forums.unrealengine.com/u/MiscellaneousMyth)\ **Replies:** 0\ **Last updated:** [June 20, 2025, 12:38am UTC](https://forums.unrealengine.com/t/entering-focus-on-windowed-view-yields-high-rhit-time/2566973 "2025-06-20T00:38:33Z")
So, I recently found regardless of my driver, or RHI I’m using in UE5, going from the background to focus puts a really high RHIT time, sometimes it goes away in a second and I’m back to 120fps, other times it stays for … --- ## [UE 5.3 UI choppy, lagging, flashing, and slow](https://forums.unrealengine.com/t/ue-5-3-ui-choppy-lagging-flashing-and-slow/1736829)
**Author:** [@OutlawedPixels](https://forums.unrealengine.com/u/OutlawedPixels)\ **Replies:** 4\ **Last updated:** [June 13, 2025, 2:53pm UTC](https://forums.unrealengine.com/t/ue-5-3-ui-choppy-lagging-flashing-and-slow/1736829 "2025-06-13T14:53:08Z")
Please select what you are reporting on: Creative What Type of Bug are you experiencing? UI/Tools Summary Whenever I move my mouse cursor and start to select tabs and properties in Unreal Engine’s UI, my editor perform… --- ## [Controller Lagging in VR Preview (UE5.0 + Oculus Quest 1) ](https://forums.unrealengine.com/t/controller-lagging-in-vr-preview-ue5-0-oculus-quest-1/2499222)
**Author:** [@frhalya21](https://forums.unrealengine.com/u/frhalya21)\ **Replies:** 0\ **Last updated:** [May 9, 2025, 4:19pm UTC](https://forums.unrealengine.com/t/controller-lagging-in-vr-preview-ue5-0-oculus-quest-1/2499222 "2025-05-09T16:19:06Z")
Hi everyone, I’m currently developing a VR project using Unreal Engine 5.0 with an Oculus Quest 1headset connected via Oculus Link (USB Cable). I’m experiencing a frustrating issue: during VR Preview, my VR controllers … --- ## [Resolve the issue of significant lag after VR preview](https://forums.unrealengine.com/t/resolve-the-issue-of-significant-lag-after-vr-preview/2481084)
**Author:** [@MioSleet](https://forums.unrealengine.com/u/MioSleet)\ **Replies:** 0\ **Last updated:** [April 29, 2025, 9:56am UTC](https://forums.unrealengine.com/t/resolve-the-issue-of-significant-lag-after-vr-preview/2481084 "2025-04-29T09:56:34Z")
(Translated by DeepSeek) Hello, everyone! I’m extremely excited to share with you how I solved the problem of extreme lag after VR preview. My hardware configuration is i9-13900KF + RTX 4080 + HTC Vive Pro 2 headset. … --- ## [FPS are locked since unreal engine 5 ](https://forums.unrealengine.com/t/fps-are-locked-since-unreal-engine-5/2465486)
**Author:** [@DorGoZz](https://forums.unrealengine.com/u/DorGoZz)\ **Replies:** 0\ **Last updated:** [April 20, 2025, 12:42am UTC](https://forums.unrealengine.com/t/fps-are-locked-since-unreal-engine-5/2465486 "2025-04-20T00:42:10Z")
i have a question and i cant really find a solution for this since months. my fps are capped on 60 which is fine i have 60hz. but every time there is a single window or pop up open it gets halved to exaclty 30 fps. as so… --- ## [How to fix rubberbanding in Unreal Engine?](https://forums.unrealengine.com/t/how-to-fix-rubberbanding-in-unreal-engine/2402187)
**Author:** [@Juzerx27](https://forums.unrealengine.com/u/Juzerx27)\ **Replies:** 1\ **Last updated:** [March 21, 2025, 4:20am UTC](https://forums.unrealengine.com/t/how-to-fix-rubberbanding-in-unreal-engine/2402187 "2025-03-21T04:20:02Z")
How i can make the player in the client side not jittery/rubberbanding like in this video: laggy Movement in client side video what option would be the most efficient solution for this case?, i tried smooth sync but is… --- ## [Verse runtime error after an hour of playtime](https://forums.unrealengine.com/t/verse-runtime-error-after-an-hour-of-playtime/1879104)
**Author:** [@Th3RedDragon117](https://forums.unrealengine.com/u/Th3RedDragon117)\ **Replies:** 7\ **Last updated:** [February 25, 2025, 7:10am UTC](https://forums.unrealengine.com/t/verse-runtime-error-after-an-hour-of-playtime/1879104 "2025-02-25T07:10:25Z")
Please select what you are reporting on: Verse What Type of Bug are you experiencing? Stability Summary Ranked hud verse code causes a runtime error after an hour of playtime. The code used was shared in a server and n… --- ## [Severe FPS Drops, Overheating & Blue Screen Crash ](https://forums.unrealengine.com/t/severe-fps-drops-overheating-blue-screen-crash/2349035)
**Author:** [@MickaDeVendome](https://forums.unrealengine.com/u/MickaDeVendome)\ **Replies:** 2\ **Last updated:** [February 21, 2025, 7:13pm UTC](https://forums.unrealengine.com/t/severe-fps-drops-overheating-blue-screen-crash/2349035 "2025-02-21T19:13:04Z")
Hi everyone, I’m a 3D artist in the game industry, and I recently started using Unreal Engine (version 5.5.3) as an environment artist. I began blocking out a 3D scene with low-poly assets created in Blender. At first,… --- ## [Oculus quest 2 lags on a nearly empty project ](https://forums.unrealengine.com/t/oculus-quest-2-lags-on-a-nearly-empty-project/2308945)
**Author:** [@KYCOKABTO\_YCA](https://forums.unrealengine.com/u/KYCOKABTO_YCA)\ **Replies:** 1\ **Last updated:** [January 29, 2025, 5:24pm UTC](https://forums.unrealengine.com/t/oculus-quest-2-lags-on-a-nearly-empty-project/2308945 "2025-01-29T17:24:55Z")
VR (oculus quest 2) starts lagging insanely on almost empty project (Hands become wavy, artifacts and a black screen appears) But in the Epic’s VR tamplate everything works fine When I selected Blank I added the… --- ## [Random frame drops when playing in levels](https://forums.unrealengine.com/t/random-frame-drops-when-playing-in-levels/1292865)
**Author:** [@Fallerrr](https://forums.unrealengine.com/u/Fallerrr)\ **Replies:** 2\ **Last updated:** [January 15, 2025, 4:15am UTC](https://forums.unrealengine.com/t/random-frame-drops-when-playing-in-levels/1292865 "2025-01-15T04:15:53Z")
This has been a reoccurring issue, but I just remembered I could ask here. So for a while now, I’ve had an issue where the frame rate drops drastically in every stage level. I’ve tried everything as far as; Making var… --- ## [Severe lag/ping in an empty UE5 project in local standalone any net-mode](https://forums.unrealengine.com/t/severe-lag-ping-in-an-empty-ue5-project-in-local-standalone-any-net-mode/1787863)
**Author:** [@Skalbe](https://forums.unrealengine.com/u/Skalbe)\ **Replies:** 3\ **Last updated:** [January 1, 2025, 12:21am UTC](https://forums.unrealengine.com/t/severe-lag-ping-in-an-empty-ue5-project-in-local-standalone-any-net-mode/1787863 "2025-01-01T00:21:32Z")
Steps: create a new project from FPS template. print ping from player state in character BP. launch as Standalone with 2 players in Client net mode (with a dedicated server) this happens with a listen server too. basic… --- ## [Copy Pose from Mesh 1 frame lag](https://forums.unrealengine.com/t/copy-pose-from-mesh-1-frame-lag/486877)
**Author:** [@GearSting](https://forums.unrealengine.com/u/GearSting)\ **Replies:** 2\ **Last updated:** [November 23, 2024, 8:25am UTC](https://forums.unrealengine.com/t/copy-pose-from-mesh-1-frame-lag/486877 "2024-11-23T08:25:37Z")
I’m using the “Copy Pose From Mesh” node for my character’s cloths and it lags behind the parent pose by one frame so it’s unusable. Any idea how to fix? I read it can be fixed if you let the parent component tick once … --- ## [Streaming Level ShouldBeVisible Lag](https://forums.unrealengine.com/t/streaming-level-shouldbevisible-lag/791345)
**Author:** [@Zssork](https://forums.unrealengine.com/u/Zssork)\ **Replies:** 5\ **Last updated:** [November 5, 2024, 11:07pm UTC](https://forums.unrealengine.com/t/streaming-level-shouldbevisible-lag/791345 "2024-11-05T23:07:30Z")
Hi, i want to add a streaming level to be loaded in the background. I am using a ULevelStreamingDynamic StreamingLevel and add it with World-\>AddStreamingLevel(StreamingLevel);. I then hide the level again after loading … --- ## [Has Anyone Found a Solution for Vulkan FPS Drop When Opening Media Source in VR?](https://forums.unrealengine.com/t/has-anyone-found-a-solution-for-vulkan-fps-drop-when-opening-media-source-in-vr/2084930)
**Author:** [@ND.D.Hip](https://forums.unrealengine.com/u/ND.D.Hip)\ **Replies:** 1\ **Last updated:** [October 24, 2024, 10:55am UTC](https://forums.unrealengine.com/t/has-anyone-found-a-solution-for-vulkan-fps-drop-when-opening-media-source-in-vr/2084930 "2024-10-24T10:55:43Z")
Hi everyone, I’ve come across this thread Significant Frame Rate Drop When Playing Video in UE5 with Vulkan Compared to OpenGL in UE4.27 and noticed that the issue discussed is exactly what I’m experiencing as well. Has… --- ## [Character Pawns basic movements doesnt replicating well on Listen Server. laggy shown with 10ms for clients own pawns](https://forums.unrealengine.com/t/character-pawns-basic-movements-doesnt-replicating-well-on-listen-server-laggy-shown-with-10ms-for-clients-own-pawns/2023591)
**Author:** [@VoiclessCry](https://forums.unrealengine.com/u/VoiclessCry)\ **Replies:** 1\ **Last updated:** [September 19, 2024, 9:34am UTC](https://forums.unrealengine.com/t/character-pawns-basic-movements-doesnt-replicating-well-on-listen-server-laggy-shown-with-10ms-for-clients-own-pawns/2023591 "2024-09-19T09:34:23Z")
Hi, I have a basic movemental players for Listen Server project but client pawns movement is looking bad -laggy- but ping is 10-20ms behind. How can I improve it? :thinking: in video, left large disc is Client and brow… --- ## [how can i solve this multiplayer lag](https://forums.unrealengine.com/t/how-can-i-solve-this-multiplayer-lag/2003479)
**Author:** [@DonJuan1232](https://forums.unrealengine.com/u/DonJuan1232)\ **Replies:** 5\ **Last updated:** [September 6, 2024, 1:17pm UTC](https://forums.unrealengine.com/t/how-can-i-solve-this-multiplayer-lag/2003479 "2024-09-06T13:17:04Z")
So I am making a small multiplayer game to play with friends online using online subsystem for Steam. But the game always has this laggy/rubberbanding while the ping looks good. Left is host right is client. ping … --- ## [Why does hands on steering wheel lag behind?](https://forums.unrealengine.com/t/why-does-hands-on-steering-wheel-lag-behind/482307)
**Author:** [@BOB.cat](https://forums.unrealengine.com/u/BOB.cat)\ **Replies:** 1\ **Last updated:** [July 14, 2024, 5:51am UTC](https://forums.unrealengine.com/t/why-does-hands-on-steering-wheel-lag-behind/482307 "2024-07-14T05:51:43Z")
Some information first: I made a driveable vehicle by following the Vehicle User Guide, attached a skeletal mesh actor BP to the vehicle as its driver. Then I set up the driver’s animBP using two bone IK nodes for hands… --- ## [Extreme Lag in unreal Engine](https://forums.unrealengine.com/t/extreme-lag-in-unreal-engine/1882706)
**Author:** [@ArjunCL](https://forums.unrealengine.com/u/ArjunCL)\ **Replies:** 0\ **Last updated:** [May 31, 2024, 4:05pm UTC](https://forums.unrealengine.com/t/extreme-lag-in-unreal-engine/1882706 "2024-05-31T16:05:50Z")
Hi, I am having issue with my unreal engine project. I was working on the matrix awakens big city Map and everything was fine till yesterday night, but since today morning it has been extremely laggy like 1 frame per sec… --- ## [Delay with Drag & Drop (Widgets)?](https://forums.unrealengine.com/t/delay-with-drag-drop-widgets/440223)
**Author:** [@Delos-X](https://forums.unrealengine.com/u/Delos-X)\ **Replies:** 1\ **Last updated:** [May 28, 2024, 12:43am UTC](https://forums.unrealengine.com/t/delay-with-drag-drop-widgets/440223 "2024-05-28T00:43:01Z")
Heya, So I’ve been following this tutorial to create a simple drag and drop UI element. Part of my version is that the DragWidget representation (in the tutorial, it’s DragWidget) is smaller than the widget being dragge… --- ## [Variables across network latency following client-predictive actions bugs out on reconciliation](https://forums.unrealengine.com/t/variables-across-network-latency-following-client-predictive-actions-bugs-out-on-reconciliation/1846912)
**Author:** [@MiscellaneousMyth](https://forums.unrealengine.com/u/MiscellaneousMyth)\ **Replies:** 2\ **Last updated:** [May 10, 2024, 4:17pm UTC](https://forums.unrealengine.com/t/variables-across-network-latency-following-client-predictive-actions-bugs-out-on-reconciliation/1846912 "2024-05-10T16:17:15Z")
Hello everyone! I’m back. Again. With more problems! So, for the last few days I’ve been working on an arcade melee combat system, but the issue arises that in attempting client prediction to keep it responsive, variabl… --- ## [Multiplayer character movement lagging on standalone game](https://forums.unrealengine.com/t/multiplayer-character-movement-lagging-on-standalone-game/1848567)
**Author:** [@TOXLEX](https://forums.unrealengine.com/u/TOXLEX)\ **Replies:** 1\ **Last updated:** [May 10, 2024, 6:45am UTC](https://forums.unrealengine.com/t/multiplayer-character-movement-lagging-on-standalone-game/1848567 "2024-05-10T06:45:43Z")
When I test my game’s movement system in the editor, everyone moves as they should. But when I build out the game and test it with my friends using the steam subsystem, everyone moves laggy. --- ## [High ping in the map](https://forums.unrealengine.com/t/high-ping-in-the-map/1665233)
**Author:** [@CrazySpooky](https://forums.unrealengine.com/u/CrazySpooky)\ **Replies:** 2\ **Last updated:** [May 8, 2024, 6:55pm UTC](https://forums.unrealengine.com/t/high-ping-in-the-map/1665233 "2024-05-08T18:55:36Z")
Hi. For some reason my map has higher ping than other maps(my map has 50 ping and on other maps i have 30 ping). Is there a way to lower the ping on the map? [Next page](https://forums.unrealengine.com/tag/lag/551.md?match_all_tags=true&page=1&tags%5B%5D=lag)