That sounds to me like you have performance mode enabled. Tap the lock icon in the floating toolbar at the bottom right corner of the library screen to disable performance mode. Let me know if that's what the problem is.
Mike
EDIT:
The settings file you sent me says that performance mode is disabled, so I guess that can't be it. I'll continue testing.
Mike
EDIT:
The settings file you sent me says that performance mode is disabled, so I guess that can't be it. I'll continue testing.