This is what happens when consoles improve their CPUs.

Suddenly they've got more cycles than they know what to do with, so they waste them on frivolous unnoticeable shit. Now you don't have that extra headroom to get you from console 30fps to PC 60fps+. You're on a much more even footing than PCs ever were with the underpowered (even at release) PS4 and Xbox One.

You'll struggle to get a CPU that does double what a PS5 can, and if it's being held back by a single thread performance (likely), there's nothing you'll be able to do to get double that.