Hello everyone, i have strange problem with my lumia 925-wp 8.1 denim, problem is backing after multitasking to start screen, and after that back to multitasking holding back , empty screen on multitasking, not always, storage sense always blank scree and lag to back to start screen, others not problems, but go to storage sense and back on home button, and after back to back multitasking, always blank mutlitasking screen. Im back from windows 10 insider preview, and roll back to 8.1, yesterday. Thanks!