The 'Guardian Games' update absolutely tanked FPS. I have a 1660 Super that could run most content at 70-120FPS @ 1440p settings at a mix of highest-high settings. Since the Guardian Games update, I constantly dip below 60 and hardly go above 70 except in menus. Changing settings barely matters. Many other people both here and on Reddit are complaining about it. Revert whatever you did ASAP.