Windows 10 64 bit May 2019 release (not preview build)
I did a fresh install From the Windows Download site (May 2019 release) onto my notebook and like always loaded Fences via Object desktop Manager. When loaded Fences stops responding and hangs system for over 5 minutes. Then it seems to work but really slows things to a crawl.
Boot and reBoot takes 5 minutes or more (when it does reboot fully) but usually hangs.
NOTHING from below posts resolves problem other than removing Fences (when and if the computer boots to a usable state). This then COMPLETELY SOLVES this problem. Perhaps a new look at Fences compatibility with Windows Vers. 1903 (May update).