V21 update battery drain

Friday night v21 upgrade for my fenix 5 installed. I had to charge my watch that afternoon. At about 5 pm the battery was full. The next morning at 8 am the battery was at 92%. I did a 30 minute strength activity. Upon completion my battery was at 24%. 2 hours later the battery was completely dead. I charged it sunday afternoon. It was full at about 5 pm. I put it on my wrist. My 1 am by vmbattery was at 20%, at 5 am when I woke up again the watch was dead. I plugged it back in. It was fully charged when I unplugged it at 6 pm. It is now 722 pm and I am already at 87%. 

What is happening garmin? I havent been able to track an activity in 2 days because my watch is always charging.