I can't say that it will fix the OP's issue, but i can't say that it won't either. Apparently he has some kind of unique problem, since you have the same phone and the same software version and yours is okay. Unfortunately, i do not use that email or else i could see if it works on my phone too.
From my own experience with installing the upgrade (along with battery training, and FDR), it greatly improved my battery life and a few other issues. I suppose that waiting for the official release is an option, but considering how long you need to wait for "official" releases...you could be waiting awhile.