Heh, I think the Aero glass stuff feels pretty dated and has problems with readability. But Win7 is just so much smoother than 11 (or even 10), even though my brand new Win11 workstation is orders of magnitude more powerful than the decade-old hardware I run 7/10 on.

And especially graphics glitches. Like a half-opacity lock screen sometimes being drawn on top of everything for several seconds after unlocking.