I am using Ubuntu 20.04 and I believe that my two monitors use different orders for the pixels and so I can only ever get fonts to look great on one or the other.
I found this previous answer Setting different subpixel rendering on different monitors but it is old enough that I wanted to know if there is any better method. I don't see much luck in dconf-editor, I see the rgba-order folder but no indication that it is aware of there being a spanned desktop over multiple monitors.
