# \#cpu-usage **URL:** https://forums.unrealengine.com/tag/cpu-usage/3930.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Why Unreal Engine Default Blank Project Take 15-20% CPU Useage. But Unity3D take only 1-2% CPU Usage?](https://forums.unrealengine.com/t/why-unreal-engine-default-blank-project-take-15-20-cpu-useage-but-unity3d-take-only-1-2-cpu-usage/1190756)
**Author:** [@BijayAdhikari96](https://forums.unrealengine.com/u/BijayAdhikari96)\ **Replies:** 0\ **Last updated:** [June 6, 2023, 2:59pm UTC](https://forums.unrealengine.com/t/why-unreal-engine-default-blank-project-take-15-20-cpu-useage-but-unity3d-take-only-1-2-cpu-usage/1190756 "2023-06-06T14:59:47Z")
I have Unreal Engine c++ & Unity3D c# Blank Project. I deploy both projects. and I test the CPU use of both projects. Unity3D project takes CPU use 1%. but unrealEngine projects take 15-20% CPU use; both projects are bl… --- ## [Why is Epic Game Launcher Maxing out my CPU Usage?](https://forums.unrealengine.com/t/why-is-epic-game-launcher-maxing-out-my-cpu-usage/399947)
**Author:** [@Thuggers](https://forums.unrealengine.com/u/Thuggers)\ **Replies:** 12\ **Last updated:** [March 23, 2023, 8:14am UTC](https://forums.unrealengine.com/t/why-is-epic-game-launcher-maxing-out-my-cpu-usage/399947 "2023-03-23T08:14:48Z")
Recently I was playtesting and My system reported a CPU Temp warning. I run a water cooled i7 6800k which normally runs between 26 and 28 degrees C even under heavy load so I was very surprised. I check my system dashbo… --- ## [CPU temps 80C when opening external project](https://forums.unrealengine.com/t/cpu-temps-80c-when-opening-external-project/695719)
**Author:** [@JoeBox9](https://forums.unrealengine.com/u/JoeBox9)\ **Replies:** 14\ **Last updated:** [January 25, 2023, 5:36pm UTC](https://forums.unrealengine.com/t/cpu-temps-80c-when-opening-external-project/695719 "2023-01-25T17:36:40Z")
Hi, I am making a game for a game jam but, I developed the game on an another OS and want to export it, so I have to use Windows, when I copy the files on the same computer to Windows and load the project, it uses 78% of… --- ## [Not using enough CPU resources Bug](https://forums.unrealengine.com/t/not-using-enough-cpu-resources-bug/737824)
**Author:** [@Doc.gdi](https://forums.unrealengine.com/u/Doc.gdi)\ **Replies:** 5\ **Last updated:** [December 28, 2022, 9:12pm UTC](https://forums.unrealengine.com/t/not-using-enough-cpu-resources-bug/737824 "2022-12-28T21:12:35Z")
Hello there. I’m running into an issue where seems that unreal isn’t using enough cpu. I have a machine gun and as soon as I start shooting my frame rate starts to drop. Having 40 bullets spawned is enough to make the ga… --- ## [Cpu、gpuが十分に使用されない](https://forums.unrealengine.com/t/cpu-gpu/491258)
**Author:** [@ctc-watanabe](https://forums.unrealengine.com/u/ctc-watanabe)\ **Replies:** 2\ **Last updated:** [November 26, 2021, 1:49am UTC](https://forums.unrealengine.com/t/cpu-gpu/491258 "2021-11-26T01:49:54Z")
現在、ナビゲーションシステムを使用して1万キャラクターを動かそうとしています。 それぞれのキャラクターにAIコントローラーを設定し、ランダムに移動するビヘイビアツリーを作成してNavMesh上を移動させたのですが、CPUの使用率が20~30%、GPUも10~20%しか使用されず1FPS程度でしか描画されません。 実行環境は、AWS EC2インスタンスの g4dn.4xlarge です。 CPU、GPUを効率的に使用させる方法… --- ## [100% high CPU load when opening unreal project in Visual Studio 2019](https://forums.unrealengine.com/t/100-high-cpu-load-when-opening-unreal-project-in-visual-studio-2019/469084)
**Author:** [@anonymous\_user\_19bfdbeb](https://forums.unrealengine.com/u/anonymous_user_19bfdbeb)\ **Replies:** 6\ **Last updated:** [September 27, 2021, 11:38pm UTC](https://forums.unrealengine.com/t/100-high-cpu-load-when-opening-unreal-project-in-visual-studio-2019/469084 "2021-09-27T23:38:37Z")
I generated a brand new C++ project for Visual Studio in UE 4.25. However, when I open it in Visual Studio 2019, my CPU spikes to 100% and never comes back to normal (I tried waiting for ~40 minutes). Nothing like this … --- ## [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… --- ## [100% CPU on UE5 launch (crashes)](https://forums.unrealengine.com/t/100-cpu-on-ue5-launch-crashes/484744)
**Author:** [@NutButts](https://forums.unrealengine.com/u/NutButts)\ **Replies:** 0\ **Last updated:** [June 11, 2021, 1:27am UTC](https://forums.unrealengine.com/t/100-cpu-on-ue5-launch-crashes/484744 "2021-06-11T01:27:53Z")
I am trying to follow the quickstart guide videos and i downloaded the project with the provided code but I can’t open any projects bc then it crashes my desktop moments later. All of my cores go straight to 100% and my … --- ## [Large Actor Arrays vs Grouped Smaller ones?](https://forums.unrealengine.com/t/large-actor-arrays-vs-grouped-smaller-ones/484026)
**Author:** [@Abstracted](https://forums.unrealengine.com/u/Abstracted)\ **Replies:** 0\ **Last updated:** [May 28, 2021, 1:53am UTC](https://forums.unrealengine.com/t/large-actor-arrays-vs-grouped-smaller-ones/484026 "2021-05-28T01:53:41Z")
I’m working on my AI at the moment. I’ve got a Squad actor that spawns an array of AI characters on play, and then those AI store their On Target Perception Updated in an Array on the Squad Actor (originally had AI stor… --- ## [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… --- ## [What would be considered the minimum hardware requirements for PC to use the Unreal Engine? I'm getting a 100% CPU usage with the ShaderCompileWorker](https://forums.unrealengine.com/t/what-would-be-considered-the-minimum-hardware-requirements-for-pc-to-use-the-unreal-engine-im-getting-a-100-cpu-usage-with-the-shadercompileworker/471450)
**Author:** [@GARYTHESKELETON](https://forums.unrealengine.com/u/GARYTHESKELETON)\ **Replies:** 3\ **Last updated:** [February 2, 2021, 8:23am UTC](https://forums.unrealengine.com/t/what-would-be-considered-the-minimum-hardware-requirements-for-pc-to-use-the-unreal-engine-im-getting-a-100-cpu-usage-with-the-shadercompileworker/471450 "2021-02-02T08:23:36Z")
What would be considered the minimum hardware requirements for PC to use the Unreal Engine? I’m getting a 100% CPU usage with the ShaderCompileWorker. I have a pretty ‘decent’ setup for gaming - but it is not on the high… --- ## [Launcher CPU Load high since submission to Game Jam](https://forums.unrealengine.com/t/launcher-cpu-load-high-since-submission-to-game-jam/475791)
**Author:** [@herb64](https://forums.unrealengine.com/u/herb64)\ **Replies:** 14\ **Last updated:** [January 4, 2021, 2:51am UTC](https://forums.unrealengine.com/t/launcher-cpu-load-high-since-submission-to-game-jam/475791 "2021-01-04T02:51:59Z")
Hi all, very strange: Yesterday submitted to the Game Jam on itch.io. Exactly since then, the Launcher now is in top list on Task manager, which it definitely was not before, because I do always monitor my system. The La… --- ## [Realtime compositing need more CPU cores or GPU?](https://forums.unrealengine.com/t/realtime-compositing-need-more-cpu-cores-or-gpu/468353)
**Author:** [@anonymous\_user\_3891b398](https://forums.unrealengine.com/u/anonymous_user_3891b398)\ **Replies:** 0\ **Last updated:** [July 19, 2020, 2:21am UTC](https://forums.unrealengine.com/t/realtime-compositing-need-more-cpu-cores-or-gpu/468353 "2020-07-19T02:21:26Z")
I am doing an AR work for windows desktop (x64). This involves camera tracking + real time compositing on blackmagic (both I/O). I’ve learned that UE is primaraly single threaded during game play (not dev, please correc… --- ## [Dedicated Server Stops Logging and Takes up 99% of CPU](https://forums.unrealengine.com/t/dedicated-server-stops-logging-and-takes-up-99-of-cpu/462662)
**Author:** [@StBlueFire](https://forums.unrealengine.com/u/StBlueFire)\ **Replies:** 1\ **Last updated:** [April 10, 2020, 10:42am UTC](https://forums.unrealengine.com/t/dedicated-server-stops-logging-and-takes-up-99-of-cpu/462662 "2020-04-10T10:42:23Z")
So we have the weirdest behavior on our Linux Dedicated Server on Gamelift Spot instances. Symptoms: CPU usage goes to 99%-100% Logs stop coming in. (we have a healthcheck that runs every minute) Gamelift healthcheck … --- ## [How can I make a game that doesn't demand much from the player's system?](https://forums.unrealengine.com/t/how-can-i-make-a-game-that-doesnt-demand-much-from-the-players-system/460069)
**Author:** [@ClubPenguin\_Gang](https://forums.unrealengine.com/u/ClubPenguin_Gang)\ **Replies:** 5\ **Last updated:** [January 1, 2020, 7:33pm UTC](https://forums.unrealengine.com/t/how-can-i-make-a-game-that-doesnt-demand-much-from-the-players-system/460069 "2020-01-01T19:33:44Z")
I want to make a game that can run well on old computers from around 2010 but I don’t know what I need to do with the game to have it not need a lot of dedicated video ram and not need a quad-core processor and not need … --- ## [Low CPU/GPU usage in project](https://forums.unrealengine.com/t/low-cpu-gpu-usage-in-project/431947)
**Author:** [@hakuanu](https://forums.unrealengine.com/u/hakuanu)\ **Replies:** 3\ **Last updated:** [October 10, 2019, 3:34pm UTC](https://forums.unrealengine.com/t/low-cpu-gpu-usage-in-project/431947 "2019-10-10T15:34:12Z")
I’m building a VR game, but when I run my game I’m only getting around 30 fps. It doesn’t seem like I’m using resources, my CPU usage sits at around 20% with none of the cores close to being maxed and my GPU usage sits a… --- ## [UE4 is using 100% of CPU](https://forums.unrealengine.com/t/ue4-is-using-100-of-cpu/453570)
**Author:** [@Raskind](https://forums.unrealengine.com/u/Raskind)\ **Replies:** 1\ **Last updated:** [August 8, 2019, 3:14pm UTC](https://forums.unrealengine.com/t/ue4-is-using-100-of-cpu/453570 "2019-08-08T15:14:10Z")
Hi everyone! I know this question were asked here few times, but I couldn’t find suitable answer. UE4 is using 100% of CPU when I want to renew material image in viewport, while I work with shaders. Also the same thing… --- ## [Extremely high CPU usage that makes my system unusable?](https://forums.unrealengine.com/t/extremely-high-cpu-usage-that-makes-my-system-unusable/443600)
**Author:** [@anonymous\_user\_e96160d7](https://forums.unrealengine.com/u/anonymous_user_e96160d7)\ **Replies:** 0\ **Last updated:** [February 18, 2019, 2:48pm UTC](https://forums.unrealengine.com/t/extremely-high-cpu-usage-that-makes-my-system-unusable/443600 "2019-02-18T14:48:28Z")
Hey guys. I’m developing a game on Linux in UE 4.20. I’ve been developing the game on Windows for almost a year but, despite UE4 having no issues running on Windows, I switched to Linux because of accessibility needs tha… --- ## [macos:Realtime in editor unnecessary pulls processing power](https://forums.unrealengine.com/t/macos-realtime-in-editor-unnecessary-pulls-processing-power/438667)
**Author:** [@rotwang](https://forums.unrealengine.com/u/rotwang)\ **Replies:** 1\ **Last updated:** [December 4, 2018, 9:11pm UTC](https://forums.unrealengine.com/t/macos-realtime-in-editor-unnecessary-pulls-processing-power/438667 "2018-12-04T21:11:12Z")
Even if the project has nothing to do, the engine pulls over 100% CPU (see Macos Activity Monitor) and the fans shovel like crazy. This happens when the editor is in Realtime Mode (Viewport Options). Please optimize th… --- ## [Unusually high CPU usage on Mac OS X El Capitan](https://forums.unrealengine.com/t/unusually-high-cpu-usage-on-mac-os-x-el-capitan/336812)
**Author:** [@anonymous\_user\_ccebc0071](https://forums.unrealengine.com/u/anonymous_user_ccebc0071)\ **Replies:** 3\ **Last updated:** [July 29, 2018, 9:55am UTC](https://forums.unrealengine.com/t/unusually-high-cpu-usage-on-mac-os-x-el-capitan/336812 "2018-07-29T09:55:44Z")
Hi, As you can see in the attached images, I am getting absurdly high cpu usage while navigating around a simple scene in UE4 version 4.9.2 (up to 160% - not sure how that is possible!), which makes my Macbook freeze af… --- ## [Mesh Reimport CPU usage jump to 100%](https://forums.unrealengine.com/t/mesh-reimport-cpu-usage-jump-to-100/415206)
**Author:** [@Shirk](https://forums.unrealengine.com/u/Shirk)\ **Replies:** 0\ **Last updated:** [January 22, 2018, 4:04am UTC](https://forums.unrealengine.com/t/mesh-reimport-cpu-usage-jump-to-100/415206 "2018-01-22T04:04:56Z")
Im really not sure whats going on, but anytime I reimport a mesh the editor hangs for 10-20 seconds and my CPU usage spikes to 100%. Reimporting meshes in UE4 used to be instant (depending on the file size), but now it t… --- ## [Mobile game FPS drops at first load and then no issues](https://forums.unrealengine.com/t/mobile-game-fps-drops-at-first-load-and-then-no-issues/406835)
**Author:** [@GizmoMKD](https://forums.unrealengine.com/u/GizmoMKD)\ **Replies:** 3\ **Last updated:** [October 20, 2017, 12:22pm UTC](https://forums.unrealengine.com/t/mobile-game-fps-drops-at-first-load-and-then-no-issues/406835 "2017-10-20T12:22:28Z")
Hi, i made a small level with 1 barrack copied in UE4 several times, 1 house copied several times in UE4, 1 tower and 1 longer building. When ever I start the game on mobile(IOS 10 - iPhone 5S / iOS 11 - iPhone SE) for t… --- ## [CPU Usage on Imac](https://forums.unrealengine.com/t/cpu-usage-on-imac/401329)
**Author:** [@anonymous\_user\_a64905d9](https://forums.unrealengine.com/u/anonymous_user_a64905d9)\ **Replies:** 0\ **Last updated:** [August 8, 2017, 3:07pm UTC](https://forums.unrealengine.com/t/cpu-usage-on-imac/401329 "2017-08-08T15:07:54Z")
Hi, I am very new to unreal engine but I’m using the following when opening unreal engine. Imac Retina 5K 27", 4GH Intel Core i7, 32GB 1600 MHZ DDR3, AMD Radeon R9 M295X 4096 MB. I am getting an enormously high CPU usa… --- ## [Bug: Created project using blank template (debug), editor uses 18% CPU](https://forums.unrealengine.com/t/bug-created-project-using-blank-template-debug-editor-uses-18-cpu/289579)
**Author:** [@jCoder](https://forums.unrealengine.com/u/jCoder)\ **Replies:** 5\ **Last updated:** [July 4, 2017, 11:38am UTC](https://forums.unrealengine.com/t/bug-created-project-using-blank-template-debug-editor-uses-18-cpu/289579 "2017-07-04T11:38:17Z")
Start with the UE4 4.3 Source, in Visual Studio, build using Debug Editor Configuration Set Engine\>UE4 as Start Project and then start in the debugger using F5 (Debug \> Start Debugging ). Switch to the Unreal Project Br… --- ## [\[Suggestion\] PLS, add some easy to access t.maxfps 30/60/unlimited to the "scalability settings" menu](https://forums.unrealengine.com/t/suggestion-pls-add-some-easy-to-access-t-maxfps-30-60-unlimited-to-the-scalability-settings-menu/380655)
**Author:** [@anonymous\_user\_6a1cc5591](https://forums.unrealengine.com/u/anonymous_user_6a1cc5591)\ **Replies:** 0\ **Last updated:** [January 1, 2017, 8:03pm UTC](https://forums.unrealengine.com/t/suggestion-pls-add-some-easy-to-access-t-maxfps-30-60-unlimited-to-the-scalability-settings-menu/380655 "2017-01-01T20:03:43Z")
By default editor uses 50-60% of my CPU (on a quite simple scene) with “t.maxfps 60” CPU usage drops to 25-40% (25% the editor alone, 40% total), with “t.maxfps 30” CPU usage is just around 5-10% total, so this is ver… --- ## [CPU usage incorrectly displayed in Swarm Agent](https://forums.unrealengine.com/t/cpu-usage-incorrectly-displayed-in-swarm-agent/375351)
**Author:** [@Wintch](https://forums.unrealengine.com/u/Wintch)\ **Replies:** 0\ **Last updated:** [November 4, 2016, 1:44am UTC](https://forums.unrealengine.com/t/cpu-usage-incorrectly-displayed-in-swarm-agent/375351 "2016-11-04T01:44:43Z")
In the attached screen you can see a side by side view. On the left is a slave swarm agent and pc monitor open (pc1). On the right its a swarm agent on a PC sending the task and its monitor open (pc2). Blue color bars… --- ## [Will the High CPU in unreal be fixed?](https://forums.unrealengine.com/t/will-the-high-cpu-in-unreal-be-fixed/292217)
**Author:** [@anonymous\_user\_2b6746af](https://forums.unrealengine.com/u/anonymous_user_2b6746af)\ **Replies:** 2\ **Last updated:** [October 21, 2016, 1:46am UTC](https://forums.unrealengine.com/t/will-the-high-cpu-in-unreal-be-fixed/292217 "2016-10-21T01:46:03Z")
I have seen multiple threads about how Unreal has unstable high CPU bursts when using the engine. Will this ever be fixed? My fans are rapidly going and my CPU skyrockets when I open the program. Will this ever be fixed? … --- ## [Epic Game Launcher, High CPU usage](https://forums.unrealengine.com/t/epic-game-launcher-high-cpu-usage/369434)
**Author:** [@anonymous\_user\_fa935a1c](https://forums.unrealengine.com/u/anonymous_user_fa935a1c)\ **Replies:** 1\ **Last updated:** [September 11, 2016, 10:20pm UTC](https://forums.unrealengine.com/t/epic-game-launcher-high-cpu-usage/369434 "2016-09-11T22:20:29Z")
--- ## [The Colour Picker](https://forums.unrealengine.com/t/the-colour-picker/363693)
**Author:** [@KWS](https://forums.unrealengine.com/u/KWS)\ **Replies:** 2\ **Last updated:** [July 14, 2016, 12:32am UTC](https://forums.unrealengine.com/t/the-colour-picker/363693 "2016-07-14T00:32:48Z")
Various issues with the colour picker. https://dl.dropboxusercontent.com/u/1315574/sRGB-HexInput.mp4 In this video you will see: When pasting a value in the hex entry box, although the New colour box updates to show… --- ## [\[4.8.3\] Launcher eating up 25% while running in background](https://forums.unrealengine.com/t/4-8-3-launcher-eating-up-25-while-running-in-background/329220)
**Author:** [@anonymous\_user\_c0687f281](https://forums.unrealengine.com/u/anonymous_user_c0687f281)\ **Replies:** 14\ **Last updated:** [January 14, 2016, 8:27pm UTC](https://forums.unrealengine.com/t/4-8-3-launcher-eating-up-25-while-running-in-background/329220 "2016-01-14T20:27:18Z")
Hi there, for some reason, the UE4 launcher stresses the CPU significantly, even after running for 2 hours in the background: Don’t see why this should happen… For some reason, the launcher starts automatically when… [Next page](https://forums.unrealengine.com/tag/cpu-usage/3930.md?match_all_tags=true&page=1&tags%5B%5D=cpu-usage)