[gnfargbl]

Have you tried disabling GPU temporal dithering via BetterDisplay or StillColor? I had a similar problem with a different brand of monitor, and this has been the only reliable fix.

[ysleepy]

This helped with my S2722QC.

Also: https://www.dell.com/support/kbdoc/en-us/000331897/apple-m-p...

[shell0x]

Thanks, StillColor seems to do the trick!