FPS drop at 8-10 minutes in game

Hello,

I have FPS drop at 8 - 10 minutes in game,

I saw a LOT of post on the forums where ppl do have this too but it was few months ago I asked the support but they kept saying it's my network but I have no lag spike and a very good internet connection

Few months ago they had this issue and then fixed it bcz a lot of ppl had it, and then it came back

I repaired the client, uninstalled everything, i don't have avast, and tried many other things but I still have it and it's so fucking annoying