Random Windows application crashes on Windows Server Hyper-V Core 2012

We're having some issues with our Hyper-V Core 2012 R2 installation on a HP DL360G8.

We have an identical server with Hyper-V Core 2012 (not R2) that does not have these issues.

When logging off from the physical server/via remote desktop, we sometimes get this error:

Configure-SMRemoting.exe - Application Error : The application was unable to start correctly (0xc0000142). Click OK to close the application. 

We've also once or twice seen a "memory could not be read" error mentioning LoginUI.exe (another Windows app in System32) but have been unable to get an exact description.

It's rather worrying to get such errors on a fresh install of Hyper-V 2012 R2. Is this even anything to worry about?

Things we've done:

• Memtest86+, no memory errors
• Checksummed the file that is crashing with the one in the verified correct ISO, files match
• Server firmware upgrade to latest firmware of all present hardware, no visible changes
• Remade the RAID5 array , no change
• Reinstalled a few times, no change
• Reinstall without applying Windows updates after, no change

Do you install all the HP Driver on the G8?

Default install of Hyper-V will not help you install the other miss Driver.