# How to make UE4 use all CPU?

**URL:** <https://forums.unrealengine.com/t/how-to-make-ue4-use-all-cpu/113084>\
**Category:** World Creation\
**Tags:** unreal-engine\
**Created:** [July 3, 2018, 11:50pm UTC](https://forums.unrealengine.com/t/how-to-make-ue4-use-all-cpu/113084 "2018-07-03T23:50:59Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ixicalibur](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ixicalibur](https://forums.unrealengine.com/u/ixicalibur)\
**Post date:** [July 4, 2018, 4:36pm UTC](https://forums.unrealengine.com/t/how-to-make-ue4-use-all-cpu/113084/4 "2018-07-04T16:36:48Z")

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read the docs/wiki and read up on how multi threading works.  
these “other games” aren’t using “as much cpu time as they need” they simply have LOTS of other stuff going on as well, and they don’t try to use meshes fractured anywhere near that level (you really are using the worst case scenario) they might have a few dozen mesh’s blow up into 20-30 bits for a total of 600-800 bit flying around, not 4000. and those bits will run happily on one core. and even then they don’t leave them laying around, they get destroyed pretty fast as they eat up draw calls REAL fast

heres how to use physX:  
[https://wiki.unrealengine.com/PhysX,…o\_Your\_Project](https://wiki.unrealengine.com/PhysX,_Integrating_PhysX_Code_into_Your_Project)

setting up multi threading:

> **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)**
>
> After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official...

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