Honestly, I'd be interested to see some kind of application or something that could desync netplay. As much as I harp about how consistent netplay is; there are times it's desynced and I have no idea why. I have to blame user error because I can't reproduce it; and the next time I try it'll be perfectly stable for 6 - 8 hours until I finally give up and turn off the emulator.
So, yeah, I really don't know. I'd think there'd still be possible cases for desyncs in Dolphin, but I've never been able to find a singular game that could cause it. Maybe Brawl with SD card checked? But even then; there's a VERY, VERY, VERY high chance of user error in that case, and on my testing I was able to get it to sync between my computers, but not to other people who independently setup.
So, yeah, I really don't know. I'd think there'd still be possible cases for desyncs in Dolphin, but I've never been able to find a singular game that could cause it. Maybe Brawl with SD card checked? But even then; there's a VERY, VERY, VERY high chance of user error in that case, and on my testing I was able to get it to sync between my computers, but not to other people who independently setup.