I've been playing around for a while with my MK3. The overall picture quality is incredible, crispy and smooth scrolling in all games. Although, I'm experiencing some behavior that I could not find if it has been already addressed: laced screen modes give strange scanline artifacts (both in games and WB). Something that looks like if it is drawn every other line.
Within the WB (184.108.40.206), this is very noticeable on the mouse pointer but also on every moving object (windows borders, windows fills, icons...).
Also games seem to be affected, no matter what VGA mode I choose. The only way I've found to avoid it is to avoid laced modes.
Is there something that I'm doing wrong/missing? Any hint on what settings should I play with?