As mentioned before, the version CARBON-KK-UNOFFICIAL-20140704-2345-jactiveltexx.zip runs fine without high battery drain.
---
Last weekend I took a lot of pictures and noticed kind of lag in camera app. Switching between different modes made the camera / display hang for a couple of seconds. After waiting period all fine.
Grinface
Even after re-installing this ROM with a full-wipe, battery drain is still very high comparing to previous versions. Camera is constantly hanging in WhatsApp and many times in own camera app, after some errors a message "Can't connect to camera" appears, only a reboot reactivates the camera.