DPC Watchdog Violation

We have been using the beta and have run into an issue where PC's with the beta would bluescreen with the above error. We narrowed it down to the beta by removing a user at a time when they BSOD so we are 100% sure. Has anyone else run into this issue?

 

This is what I got in the event log " The computer has rebooted from a bugcheck.  The bugcheck was: 0x00000133 (0x0000000000000000, 0x0000000000000501, 0x0000000000000500, 0xfffff80440373358). A dump was saved in: C:\WINDOWS\MEMORY.DMP. Report Id: 02e5f14c-413d-4345-9ddb-8d482fca6f60."