Sergey, I just checked my nvidia drivers and they are up to date.
I am using windows 11 with Vulkan. I had absolutely no problems before. The game ran beautifully. Now I have the same performance problems.
I will try on DX11 since someone mentioned it was working for them but I really want to be using Vulkan more than DX.
If DX is working better for now, I will let you know here.