Starting in 2021 DVR is stopping recording early

I have used contour DVR for over 3 years.  It has started recording after the start of 2021 all programs on all channels 1 min early and stops 1 min early.  I have rebooted DVR to see if it would reset the internal clock which did not correct the problem.  Modifying the scheduled stop time by the minimum 3 min increment causes some programs not to record do to conflict.  it is irritating to not see the end of some recorded programs.  Can this be fixed?