Given that it's our software you're talking about it would be wise to stop acting like you know more about it than us at every turn, yes. Also if you want to drop the sarcastic comments, that would be nice.
This is why I can't block you on here unfortunately, because tragic advice like this is only going to get the hopes of somebody up to unreal levels, when the reality is what you're suggesting won't change a thing.
The only way MAME is going to be affected by the underlying OS is if it's degraded to a state of having spyware, adware and other random programs running in the background randomly eating up CPU time, and in that case the OS should just be reinstalled. The Windows install on one of my secondary boxes is what, 5-6 years old, it's gone through so much Windows churn it takes a good 10 minutes to boot, but it runs MAME exactly the same as it did 6 years ago because once you're running MAME very few things actually matter.
Your intention here is clearly just to give bad advice and waste time, plus drop the odd sarcastic insult, you are detrimental to progress, and bad for this forum.