You cannot have two versions of PPSSPP installed simultaneously unless one is the "Gold" paid version. You must uninstall the modern PPSSPP from your phone first (back up your PSP/SAVEDATA folder before doing this).
To get the absolute best framerate out of this classic version, configure your graphics and audio settings using this baseline configuration: Graphics Settings ppsspp old version 0.9 8 apk
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. You cannot have two versions of PPSSPP installed