alt Hacker NewsSame here, Samsung s95b QD oled, mister laggy tested it, as far as I can remember it's about 8ms. Also snac adapters by pass usb entirely and are pretty much zero lag as far as I understand.
Retro arch has run ahead latency reduction etc, I'd like to see some comparisons of that Vs mister. I could do it myself but I've never got round to it. I've noticed that fiddling with latency reduction in retro arch really works, but it is a lot of fiddling.
I did the preemptive frames thing with Retroarch with Sonic the Hedgehog 3 a couple years ago, and I certainly convinced myself that I could tell a huge difference...and then I kept taking hits and dying just as much as I was without doing anything.
It's entirely possible that someone who is better at video games can tell a huge difference (e.g. speedrunners and the like), but I'm afraid that I'm not good enough at most games to be able to realistically tell much of a difference.
I might still fiddle with it a bit; someone told me that it helps a lot with Mike Tyson's Punch Out, which is a game I have never beaten with an emulator.