This problem is still present as of version 5617.700.0.0 of Xerox Global Print Driver. All the computers in our organization that have the Xerox drivers installed have this issue, we have discovered it because many users had they workstations locked due to missing free disk space on C: driver, the C:\Windows\System32\spool\drivers\x64\3\Xerox\Product Data\Public\DCPs can grow to 20 or more GBs.
After every boot I see WmiPrvSE (a system Windows process that among other things runs the printer drivers) using a full CPU core and writing to C:\Windows\System32\spool\drivers\x64\3\Xerox\Product Data\Public\DCPs
Please fix this as soon as possible or provide a workaround.