well so far all pspgba emu's are veryyyyyyyyyyy slow. homer's rin gbc was a breakthrough with veryyy good speed. i know that homer is working on it but its very hard to do. the one on 1.5 was extremely slow for me (anyone else?)
and ther IS one for 2.1+ but it is slowwwwwwww as hell. so i wouldnt suggest it. im waiting to see if homer makes one because i know homer would make a very good one.