# Async Physics not working correctly when adding velocity

**URL:** <https://forums.unrealengine.com/t/async-physics-not-working-correctly-when-adding-velocity/1881842>\
**Category:** Programming & Scripting\
**Tags:** async, unreal-engine, Physics\
**Created:** [May 31, 2024, 3:34am UTC](https://forums.unrealengine.com/t/async-physics-not-working-correctly-when-adding-velocity/1881842 "2024-05-31T03:34:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Itam0990](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Itam0990](https://forums.unrealengine.com/u/Itam0990)\
**Post date:** [May 31, 2024, 3:34am UTC](https://forums.unrealengine.com/t/async-physics-not-working-correctly-when-adding-velocity/1881842/1 "2024-05-31T03:34:50Z")

</div>

Hi, i am making a custon character movement using “add force” and “set physics linear velocity” in a timer and works, but using this in the event “async physics tick” the character the collision stops working, them if something colide the character passthough.  
I dont know if is a bug, because when i activated the async physics in the character and have hit play the editor have freezed for some seconds them have exit the game.

[2024-05-31 00-06-51.mkv](https://forums.unrealengine.com/uploads/short-url/w5xpRLM70JtOdETrE3riBv2PwGF.mkv) (2.6 MB)  
[problem.mkv](https://forums.unrealengine.com/uploads/short-url/diOgOMMozXLrx8kqtpLdoyj3Tkg.mkv) (2.6 MB)