The Steam Deck only does VRR over Displayport. Valve has their own engineers working on every part of the software stack. It’s their own hardware and their dock. With all that, Valve still can’t get VRR over HDMI to work.

Fuck the HDMI forum.

And the price for that beautiful, flicker-free experience is … some Macs will brick themselves. You can get them into a state where (IIRC) the dual-boot between an older macOS and a newer one (or Ashai) disagree on display modes, and the bootloader dies. Only Apple can fix that.

The horrible part is it was. Your other choice was ext2, which wasted so many lifetimes with its hours long fsck times. Reiserfs was a cut above the rest, we would all be using it today if it weren’t for that one teensy-weensy legal issue.