I just went from 4.4 KitKat CyanFox back to 4.3 AllianceROM Sammy because it was a bit unstable in my opinion ( The connection to the camera always got lost). So after I did that, my phone freeze every time an have these pixels in red sometimes and also green but i couldnt explain myself why. after rebooting the rom it often doesnt start. Before I flashed the AllianceROM I flashed another Sammy Rom with the same problems.
I took a picture to make it easier for you to find out.
I am not sure whats wrong with it maybe you can help me. Google couldnt :/