Screen issues since ICS update

The only issue I've seen is an occasional delay in the screen waking up when it's dark and I hit the power button. There is sometimes a 3 or 4 second delay before the screen turns on.
 
I've had problems with my screen flickering, Among several.other issues. I don't know why I've had so many issues tbh. I am having problems with keyboard setting customization, copy and paste, browser closing, and I keep getting notification to check the status of my T-mobile My Life Contacts. It makes no sense. I think I'm going to reset to factory and see if I can't re-install ICS 4.0 because right now, I'm not really enjoying this update.

HTC Sensation ICS 4.3.0