Did you try shutting off the fps cap in the settings? It is the 2 bars in options ones for back ground fps, and the other is for max fps cap, uncheck the boxes.
If you are still having skips I’m not sure. For me it doesn’t skip even if it goes down low, or 180 this time I am in town.
Make sure vsync is off in GeForce settings, and it’s set to max performance not max power saving.
That could be true I always disable windows fire wall and defender. That can be annoying to do if you don’t have pro. You could try windows 11 that has a game mode that when it detects your in game it stops back ground applications.
My card isn’t that much better than yours it’s a 2080, though my cpu is it’s a 10700k 5ghz all cores, but that shouldn’t be 140 to 300 more fps. I never drop below below triple digit numbers. Though what resolution are we talking about? I’m talking 1080. I could see a 2070 and a 3800x hitting 30 fps on 4k 144hz. I have dipped below 60 when I use to play 4k 420 8 bit 120 hz on my tv.
You could always try windows 11, it’s free ATM, and if it doesn’t fix it you can always go back. It’s werid if you are playing 1080 resolution and getting that many less fps than me.