A bit before I got sick I finally upgraded my home theater receiver, to a Denon AVR-S760H, mostly to finally get HDMI 2 support so that I could finally get 4K video from my connected devices (especially my Playstation 4).
As an obvious bonus, this means I can also run my connected Windows PC at 4K. Its GPU (a 1050Ti) isn’t quite up to snuff for that for gaming, though, although having desktop and web browsing at 4K is quite nice.
Stepmania defaults to running in a borderless window instead of proper fullscreen, though, and so even though it only internally renders at 1080p, it then tries to upscale to 4K, and gets very laggy as a result. Running at native 4K isn’t really any slower, at least, but it’s stil laggy and unplayable.
However, I discovered that if I set the fullscreen mode to exclusive, then setting the resolution to 1080p unlocks much higher framerates, up to 120Hz, because my TV supports VRR and 120Hz. (Ostensibly it supports this on 4K as well, although Stepmania didn’t offer this configuration, likely due to my GPU.)
So anyway, Stepmania at 120Hz is ridiculously smooth — almost uncanny in its smoothness. It also makes steps register with much greater precision, and I’m actually surprised at how much more responsive the game as a whole feels now.
It still does nothing to help me with my cough or fatigue, though. But it was still nice to play for a little bit.