Question Should I upgrade my cpu?

[fluic]

I have a 2060 super with an i5-9400f that I use for gaming. I want to get a better performance increase on my games. Would a i9-9900k be a good upgrade or am I better off with what I have.

 

[rgd1101]

full system spec? include make and model of the psu
cpu/gpu temp and usage during the game?