Installed on Redmi Note 2 Prime.
The ROM itself works fine. No issues with calls, text, camera or network.
Only issue, like others, is the major battery drain. It dropped 7% in 5 minutes when the phone was idle. I'll probably go back to 6.5.5 for now and wait for improvements to the power management before updating again.
Edit: It does charge very fast though. Much faster than before.
Different experience for me - my battery percentage doesn't fall for hours in standby