Default 3 Sec Screen display delay

Hey guys,

I am having a weird issue,

so today i had a pinch and installed latest CM11 build on my Note 2 using latest CWM. Everything runs perfectly but when i press the power or home button to turn screen on, it lags for over 3 seconds and then screen shows up. same is the case with shutdown.

Furthermore the same thing happens when i receive a call, i stare at the screen with the ringtone playing in the background until the screen shows up. Otherwise everything seems OK.

In my frustration i installed latest version of SlimKat rom but the same issues persist. Anyone got any clues?