Well, you are not alone in this obsession to achieve an optimised sim. I would guess that in Xplane 11 I spent about 55% of my time tweaking and hacking settings and only about 45% of my time actually simming.
Thankfully, for me, FS2020 is a lot more optimised and I no longer tweak at all. I just spend all my time flying or downloading some mods which interest me. It’s a new experience for me and a very welcome one.