Fill is not filling properly

Have a look at this:

I don’t usually send folks in this direction.
This is more Ruida controller related than win 10 vs win 11.

On your flag, the error drifts gently from nearly perfect at the bottom to furthest out at the top.
It’s not all over the place like data-noise or lost motion.

Conversely - look for sharp steps or jumps in the skewing to indicate that we should be looking in a different direction.