Sharing my today's experiences.
Normally updates are received during the night. Today during the daytime, at least that's what I am thinking now, as:
0. Slow sync
1. Huge battery drain
2. Watch language had changed to English from Dutch. Wanting to change back to Dutch, Dutch/Nederlands was not present in the list (only a few languages). Resetted the watch, connected in garmin express, which mentioned all up to date and no updates available. Unplugging from garmin express, Nederlands was selectable again as language.
3. And reading @runningbommel, also here SW v5.5 displayed in watch and GC portal, not 6.2. To my knowledge (with auto-update on) my 945 was up to now in the 1st waves of rolling out new versions.
4. No OHR stats - Now looking in GC I notice that since the 1st sync this morning (9AM CET), until what I did later this evening (see point 2) ~7PM CET
5. And my Body battery score appears nuked :/
Not yet complaining as I guess in the end all will settle, but sharing as perhaps others experience the same and seek reflection.
EDIT 9:30pm - Run all sync methods again: WIFI/internet, via BT/GC mobile, via USB/Garmin Express; all to no avail... // Resetted still v5.5 // drain & OHR seems resolved since 7pm CET