Upgrading to WatchOS 4 has been incredibly frustrating. My watch struggles to even open the workout app now. Doing what I've always done which is play music while running the workout at the same time (favorite feature of the Apple Watch) has become nearly impossible since the upgrade. Considering that I never had issues with this before OS 4, I'm confident Apple has throttled my device due to the age of the battery. I want to give it one more year before upgrading so I'm thinking about replacing the battery on my own. Is this totally insane or a reasonable option? Thoughts?