Black screen while running shin budokai 1 Help!

[Herofz]

Soo i have shin budokai for over 3 days on my samsung galaxy s6 edge+ and was having no problems game was always 100% speed, so its not my phone's issue. Then i left my phone for 2-3 mins while its still open in the background then i could still hear the sound of the game and still move but the screen was black so i restarted ppsspp and now when i enter shin budokai 1 the screen is the screen is black and i cant hear sounds also the controls are frozen if anyone has a fix plz tell me...