Default [Q] Cyanogenmod 11 battery issues

Since i switched to Maclaw's CM 11 about a month ago and i had no trouble with the phone untill i updated to version 3/8 and the versions after that..the battery gets drained fast even when the phone is always underclocked to 200 MHz which never made an issue for me in terms of being a bit slow.
It used to drop just 1% every 15 min with heavy data use..a lot of the time it even lasted more than that! Now drops 1% every 5 min or less with the same heavy data use!!!

What went wrong?