I don't think it would help sml as a speedgame if we were to ban/put in a different category all emulators. Especially if this one god awful cheated run is the triggering factor, the community is small and knowledgeable enough for cheated runs not to be an issue. I think we/you should allow the most accurate emulators for the leaderboards (i don't even have a time on there lol), as a way to let the doors of sml speedrunning open for anyone serious enough. RTA video proof should be necessary for any unconfirmed runners though. And if multiple great emulator runs show up in the future, maybe put the emulator ban in place, but i really don't think it's necessary right now, as the game is not that prestigious and a higher number of runners would revitalize it.

I'm barely in the community despite having spent thousands of hours playing this game, so do whatever you feel is necessary.

About Tycon's framerate, could it be that Gameboy player EU and US are different in some way? could it be the cartridge?