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Navigate to Settings -> Graphics -> Effects .
A: This is usually a performance issue. First, ensure your phone isn't in a power-saving mode. In PPSSPP, go to Settings -> Graphics and change the Rendering Resolution back down to 1x PSP . If that doesn't work, turn on Frameskipping and set it to 1 or Auto . Also, make sure you are using the Vulkan backend. nfs underground 2 for android ppsspp install