Freezes, restarts and severe battery drain after updating to 17.28

Hi,
since installing the 17.28 update on my Forerunner 945 LTE, the watch has been suffering from freezes and restarts during the day. Today, I have also noticed severe battery drain issues as the battery went down from 40-50 % to a forced shutdown in less than 24 hours. I only walked around, slept and received some notifications - i.e. no actitives or other intensive tasks since the update and despite this, the new firmware version has been very unstable so far.

Is this a known issue? I've seen some other threads mentioning problems with the 17.28 firmware, but nobody has complained about extremely poor battery life yet. I would appreciate if there was a way to downgrade while waiting for a fix so I could actually use my watch in the meantime.