> pretty much NO game becomes less fun with even a 30% FPS drop

I mostly play fighting games. A 7% drop in FPS is more than enough to break the whole game experience as combo rely on frame data. For example Street Fighter 6 is locked at 60 fps. A low punch needs 4 frames to launch and leaves a 4-frames window to land another hit. If there was a 7% drop in FPS, you would miss your combo. Even the tiniest drop in FPS makes the game unplayable.

It's the same for almost every fighting games. I know it's a niche genre, but I'm quite sure it's the same for other genres. It's a complete dealbreaker for competitive play.