Aliens vs Predator - screen turns upside down

[DTHLongplays]

Hi everyone. I'm new here, and i need your help. I just downloaded Aliens vs Predator Requiem for the ppsspp v1.6.3, and in the game while playing, when i press Up button to activate different visions of a predator, then the whole in game world turns upside down, but interface, like health bar, stays normal. So yeah, i need help to deal with that problem, cause it's impossible to play that game with that bug, lag or whatever that is. Does anyone know how to solve this problem? Thank you!