The Keyboard Freezes, App Crashes I'm running on CyanogenMod and in the middle of typing, the keyboard would freeze heavily and crash/minimize and I can't get it back up. This lasts for about a minute.
If your screen blinks and/or keyboard freezes, go into 

Settings --- > Developer options and make sure the following are checked. 
Disable HW Overlays and 
Force GPU Rendering 

Now it should be blink/flash-freeze-free