Frame Generation is randomly turning itself on
Even with the frame generation settings off, randomly I'll see the Steam Overlay FPS counter report that frame gen gets turned on for a second, and then turns itself back off. For example if the framerate counter says I'm getting "120 FPS" sometimes it'll suddenly say "120 FG" for just a second or two.
This is causing added input lag/delay and other visual issues that come from using frame gen for myself and others.
Based on other people on the Steam Forum testing if deleting the relevant dll files would forcibly disable it, it seems to be the Intel version of frame gen that's getting turned on randomly, since that's the one dll file that can't be disabled without the game crashing.
You can read more from all the other people who are experiencing this issue in these two Steam threads:
https://steamcommunity.com/app/2807960/discussions/0/591784592221174993/
https://steamcommunity.com/app/2807960/discussions/0/591784592221165054/