I can’t speak on multiplayer experiences, but i have several emulators set up on my OLED deck. GameCube, N64, switch, ps2. They work well, and i have a 3DO pro2 i use while it’s docked to my 4k tv, sound through a surround sound bar with woofer - amazing sound. I mostly run skyrim and Balder’s Gate 3 at the moment, but i enjoyed BotW and my son likes sonic.
I’m late to the comment board, but I had to say something. I was amazed when one day my broken Balders’ Gate III P22 install suddenly not only worked, but worked with Vulkan. Until now, I figured it was an improvement to the Proton-GE or Experimental that came down around that time. Anyway, when I loaded my game (in the underdark) on my OLED, I was shocked at the improvement.
Not only was the framerate closer to 40+ vs 28-30, but it was vibrant. The resolution appeared to be better, too. It was gratifying to see it looked better than on my ancient Lenovo gaming laptop (circa 2016), which, to my surprise, handled it quite well considering the age of the NVidia card.
It’s configured to run at the native resolution of the device, and looks good, but I’m not sure it is really at 4k.
Skyrim performs flawlessly, but Baldur’s Gate gets sbout 15 fps at this rez, so I have to lower the graphics setting. I’m nesr endgame, so there is a lot of city animation.