Default Battery Drain on resurrection remix?

Hello i have flashed resurrection remix v5 (android 4.4.2) on my N7100 3 days ago.I have not senn any bugs exept one.
When the screen is on battery drains fast.When it is locked, it is a good battery saver.But when i use it it drains fast (%1 for a few minutes).My last rom was Cyanogenmod 10.2 and it was better than this one.So i can compare them.So is there a known bug on the rom?How can i track battery draining more detailed?Thank you.