Thanks for your help. I’ve been very satisfied using the NVIDIA control panel to tweak my graphic experience and had a stable workable configuration. But as I mentioned, now when I start up MSFS the color scheme is terrible every time. But then if I change the resolution in MSFS (doesn’t matter to what) the graphics revert to my normal high quality setup. Then I switch it back to my default monitor resolution and my restored good settings are retained and off I go, until the next time. XP11 and all my other apps are fine and don’t have this issue.
NVIDIA investigated with me and says it’s not an issue with their driver which I agree with.