Stalker 2 Dropping down to 10fps in towns frame generation or memory leak problem

I have tried re-arranging settings, editing the ini files, installing mods, changed the shader cache size to unlimited and nothing has fixed this problem. It seems to be related to frame generation or a memory leak at least thats what I've read on another forum. Im not completely sure what the problem is. My PC is plenty fast enough to run the game, its not optimized and dosent work properly. I cant play it. Waited 15 years for this game and I really want to get it working. Does anyone else have the same problem and has found a solution?

Specs:
Ryzen 5 3600
3090 Ti VRAM: 8gb
DDR4 16gb Ram
NVME 4.0 SSD

edit: The 1.0.2 patch fixed most fps drops
I am also using this mod now: https://www.nexusmods.com/stalker2heartofchornobyl/mods/7
I have most settings on medium. Environment settings to low. DLSS, DLAA and FSR enabled. Vsync off. Nvidia reflex enabled