recording starts late and ends early

I understand that you are aware that all DVR recordings start late and end early.  By adding the buffer to the beginning conflicts with the next recordings.  When I am recording shows during prime time, I’m usually recording 5 shows and when they end I may be recording 5 more shows the following hour.  By adding a buffer your system won’t allow the next group of recording to start.  Please fix the timing which has been ongoing for years.  it’s frustrating to watch a 2 hour show only to have the very end cut off