You're starting to build a picture in my head of my dog chasing its own tail hehe
!!
You'd probably be a whole lot happier if you just got it to a "reasonable" point & then just enjoyed it for what it is lol
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I just have the 50 version. I've made a few minor tweaks here & there along the way. Otherwise, the panel has held up very well from a hell of a lot of use for its age but I haven't needed to make constant changes. Much of it is set as it is when I first configured it. It probably helps that my TV is always in a "darkened" room so I also don't need to keep adjusting for light room/dark room as well. Constant changes from light/dark/light/dark may be playing games with your mind about the colouring too.
Calibrate it once for your required conditions & let it be or it'll never end bud
!! You'll end up spending more time chasing your own tail than you ever will actually enjoying it.