Okay so, I own a AtGames Portable Genesis System, and I was wondering if it's accurate enough to count as usable for a speedrun. Note I am fine with using the Exodus, or Fusion Emulator if needed, just curious if I can use it since I can record it.

What core is it using? I do suggest Bizhawk if your community allows it, else fusion. Then you know it will be accepted.

I can't seem to find the specs what so ever for this thing, but according to the review from SegaBits it tends to speed up emulation for some games, so my conclusions is it's not up to par for speedrunning which sucks. I'll just stick to Fusion.

Have no personal experience with it, but the AtGames emu boxes are all junk from my understanding.

Just use Bizhawk

In disney games.we have not found speedups in bizhawk. I however noticed slightly more lag in fusion than on console.