Sudden changes in reported data after updates

The last set of updates to watch/Android software (VENU3 5.3) over the last week seems to have skewed my data (?).

Not just that, I notice that the watch is again overly sensitive to wrist movements, turning the screen on constantly in response to minor movement. It is impossible to take a shower while wearing the watch, as the water drops turn the screen on and drills down into settings.

Sleep detection is not accurate, no longer sensing correct sleep onset.

Stress during sleep is noticeably worse according to app, and REM detection... well, I am now seriously questioning the accuracy of this metric alltogether.

This is unfortunate. I quit Oura due to problems with software that inaccurately rated sleep and other metrics much better than perceived. Here we seem to have the opposite problem.

How can I roll back watch and android software a couple of versions to something that seemed to jibe more with personal experience???