Speed Problem

[evilgoku]

Hello Greetings Am just new
Am using PPSSPP 1.1.1 and got problem with speed
~10 min playing Ys I & II Chronicles normal speed After that game going too slow and sound is bad too I used Alter speed but Too High speed I can't control the player

I used OpenGl and Direct3D nothing happen Even i play
Tekken 6 Dark Final Fantasy II 20th Anniversary Edition [EU] Assassin creed same slow speed
am using Win XP ( i guess too old )

Is there any way to solve this problem