Do Vostok Ambhibias driven by a 2416 cal. have a noticeable accuracy drop off when the power reserve is low? I have worn my watch on/off for about 2 hours total for the past three days (low auto power input) and have noticed subpar accuracy since. I have lost about 1hr30 mins during the last 2 hours. The watch was performing brilliantly up until this week with no shocks/ drops etc. Please don't look at my post history to find out more about this watch as I have not documented this watch.