Since updating to Beta 5 (iOS), my Series 4 (on Watch OS 5.3) has been draining battery 1% every 8-10 minutes. I did not have this issue with Beta 4 (iOS). If I check the watch app on my phone and look at general -> usage -- its showing that the watch is pretty much never going to sleep (it shows the two minute amounts at almost the same exact number, or off by a few minutes -- likely because there are periods where I put it into Theater Mode). I've unpaired and re-paired and no change. (I posted this in the Beta 5 release thread but figured I'd post here as well for those who may not look at that thread).