Body distortion when doing some multitasking

Please remove all Mods and CC to see if they cause it.

did that already it's the same with and without mods and the problem occurs since cats&dogs

Please post a DxDiag:

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/

You can attach it directly to your next post.

not sure how that's related to my problem but sure.

Also I somewhat narrowed down the problem. it only happens with some of the clothing my Sim is wearing, which aren't CC clothes if you wanna ask me that next nope it's like you could see in the picture with the dog, an base game top

A DxDiag tells us a lot about your system like is the graphics card good enough (it is) are the drivers up to date (they are) and other useful stuff to help with diagnosing a problem.

Your system is fine, though there are some crashes you may want to look in to if they keep happening.

Please try to repair your game. Rightclick it in Origin and select Repair. See if that helps.

Glad that it helped. Hope it stays fixed.