Prince of Persia Revelations block silhouettes on screen

[bryinabrt]

Hey everyone, just started using PPSSPP on android, and I had some issues with Prince of Persia. The screen shows some ''blocks'' on the screen. I dont know if its common on other games, but I've been messing around with the options and nothing changes it. Also, when I were saving the game, a save menu silhouette appears sometimes as well. Any solutions? Here is the album on Imgur: /a/e1q0rIz