Huge fps drops after vol6

I already deleted it, even the entire folder, thinking maybe there was a change in the settings. It didn't do any good. Then I uninstalled the game and reinstalled it thinking maybe it would be better than the update. I guess I can't explain the situation fully. My problem is not instantaneous fps drops or stuttering. While I was sitting idle in the garage after the game first started and finished the shader cache compilation, the 190 fps I used to get is now around 155, and the 150-160 fps I got outside is now around 110 and even drops to 80. I don't experience any lag or freezing anyway. In short, I can barely get the same fps on medium that I get on ultra when I have 5.1.