New version‘s severe performance drop, low game frame rate, stuttering

[STIH1LY]

If I start the first game in standard mode, the frame rate is still normal during the first 15 minutes, although it's not high, it's still playable.
After about 20 minutes into the game, the frame rate dropped from around 150 to about 70, almost halving, and was accompanied by excessively long frame generation times, reaching over 40ms
CPU R5 5600X
GPU RX 7650GRE
4X8G DDR4 3200MHZ
WIN11 PRO
DX11 1080P FSR2 1X
AND ALL LOW

 

[rickunderstars]

Same issue after the Old Gods update, I'm usually stable around 100 fps but after ~20 minutes the framerate drops at ~20; the only way to solve I found is to close and reopen the game. This only happens when playing standard mode, no issues when in street brawl or hideout.
I thought it was a Linux issue but I guess it is not.

cpu: AMD Ryzen 7 5800X
gpu: GeForce RTX 3080
memory: 2x16 DDR4 3600 MT/s
os: NixOS
res: 1080P no upscaling
proton: GE-Proton10-29