Fortnite download bsod

Hi, Getting multiple DPC_WATCHDOG VIOLATION BSOD’s during download of Fortnite (Windows 10 current version)

Resume works, but then random BSODs. Finally got it all downloaded, then failed on post download validation several times. Never completed. Deleted games, uninstalled EPIC launcher, rebooted, re-installed, started download of Fortnite, failed again (twice). This is a stable PC, used extensively for VC2019 development with C#. C drive is a Samsung SSD, drivers all uptodate. Any suggestions??