I've discovered an issue with my S62 whenever I complete a lap swim (in the pool), the "Pulse Ox During Sleep" option gets turned off. This happens every time I do a swim and requires me to manually turn that option back on (half the time I forget). The Pulse Ox during sleep is a configurable option on the watch that should not be affected by doing any activity. If for some reason the software has to turn it off when doing a swim, then it should turn it back on after completion.
I contacted Garmin and they just told me the standard issue "try a full reset of the watch". That did not resolve the issue and I believe this to be a software bug. Has anyone else experienced this issue? Or can someone else confirm it exists by simply starting and stopping the "Pool Swim" app and then checking to see if their "Pulse Ox during sleep" option gets turned off?