I've been banned from everything so this is the only way to get the word out about this, so here we go!

I bought the Data Frog SF2000 handheld retro game console (it looks like a Super Nintendo controller).

It's been widely reported that the SNES and GBA emulators are laggy and the games are basically unplayable. However, all you have to do is change your "TV System" in settings from NTSC to PAL. This fixes the SNES lag completely. The GBA still feels slightly off, but is now playable.