/vr/ - Retro Games

hey
Just got this snes clone for literal pocket change, and it's pretty good, runs all the games I've tried. The thing is, while playing A Link The Past, it slowed down a bit at the second boss (multiple large sprites on screen). What I'm concerned about is, how can I find out if this is an emubox or a hardware clone? I've found little to no info on this on the internets. Can lag occur rarely on actual snes hardware, too? (last time I played on a real one was ten years ago) I would really appreciate your help.