Unhappy [Q] AOSB Screen off Delay

Hy there. I have a problem with my N7100, running on AOSB 4.4.2 with devils kernel. Every time I press power button to turn screen off I have a great delay. 2-3 seconds before it turns off. Same with stock CM kernel. Same woth AOSB 1.2.4 and 1.2.7 as well. Same if I turn on animations (CRT) or not. Pleas help, it is very irritating. Thanks!