want to bump a stable-ish 80-90fps to stable 120fps, and again drops power and temps slightly. That sometimes does cause smearing but for the most part I don’t notice enough to be annoyed.
So why do you want high fps? The issue with low fps is, that it causes smearing.
I don’t notice smearing much and run my games/display at 30 fps.
And then there are games with motion blur effect, silly, right?
Not without NAM, it fixes some restrictions implemented due to hardware constraints then.
Btw, there’s OpenRA.
You should take a look into KSP and Rimworld modding. Adding emtirely new physics is only the cup of the cake there.