Whenever I've tried downloading custom ROMs, the phone starts up with a super slow framerate then after about 2 minutes it jumps back to regular speed. Also, the system UI will crash at random and the phone will be unusable for another minute. There doesn't seem to be any difference between different ROMs. I've already tried reclassified get everything to stock and the same issues occur. Should I take it back to boost and exchange it or are these symptoms happening for others as well?