POE2 - Stuck at 24 fps

Since today I can't game to work above 24 fps. I tried reinstalling the game, drivers, fresh windows install... It was happening before but restart helped.
Until today it was running in 80-110 fps range.
Tried to look for solution but most answers are blaming the hardware. On other games everything is working just fine.

I have a similar problem. Game ran fine for 100+ hours on Vulcan. Now if I use Vulcan or DX 11 I'm getting shader spikes that make the game a slide show. DX 12 locks me at 30fps.

No other games do anything similar. Ultra on cyberpunk, Starfield, etc...

Check your card is reporting the correct PCIE lane usage (X8/x16 3.0/4.0) using GPUz or Nvidia control panel > System info.

I had this problem with my 4060 and until i updated my bios, it was for some reason locked to x1 4.0 rather than x8 4.0. If so reseating your card and making sure its in the top slot may help.

So I upgrade my BIOS earlier to the newest version I could find.

All I'm seeing under System Info in NVIDA control panel is:
Bus: PCI Express x8 Gen 4