I have already gone down the rabbit hole of using my original SNES from childhood with an XRGB Mini Framemeister. It's a pretty good setup, but has a bit of lag and a few gotchas. I also managed to ...
HDMI 2.0 is fine for streaming and 4K60; HDMI 2.1 is required for 4K120 gaming. If you game on PS5/Xbox Series X, use HDMI 2.1 (both consoles include a 2.1 cable). HDMI 2.1 improves audio (eARC, Dolby ...