Just signed up to add my TV to the list, it’s a Panasonic TX-P50G30B.
2x works great with almost everything and looks great.
SNES – Yes
PC Engine – Yes
Saturn – Yes
PS1 – Yes
Neo Geo – No blank screen
X68000 – No blank screen
3x, 4x and 5x – none of these work at all for anything.
I have tried using my XPC4 in conjunction with the OSSC and my TV, and everything above works, 2x, 3x, 4x, and 5x, plus Neo Geo and X68000. Only problem is that the XPC-4 autoscans the picture and is constantly zooming in so to obscure parts of the picture. This can be turned off in analogue input mode, but not digital .