Flickering, lagging, is it GPU acceleration?

So i installed sequoia on my 2012 15'' unibody macbook pro with 2,3ghz i7 yesterday, and i got it working, but there's something weird and i'm curious why it's happening. So playing videos in youtube that have quick movents or scrolling on websites has a weird effect, like the background becomes a lighter colour, and sometimes flickering and lagging. The transparency is working though so i don't know if this has something to do with gpu acceleration. I aasked chatgpt for help and it told me o do some stuff to test metal and it showed metal:metal2, don't know if that's relevant

Author: @MrMolotov888