I loved my stock upgaded sound system but one day it all went very quite, I assumed the amp and just fitted a double din stereo and bypassed the amp, is there a way to tell if the amp is dead?

is there anyway i can get a higher fps than 11-12 fps in gameplay with the jpcsp v0.6 1913 emulator when it boots up it is 50 to 60 fps...in game menus 33 to 40 fps then drops further to 11 to 12 in actual gameplay how to speed it up? https://img.torrent-katochka.com/gremlins-vs-automatons.php?img.j...