You can add individual files or folders to the AV exclusions to see if that makes a difference. If that is not helping try adding the .dll file to the Exclusions of Detect shellcode injections (i.e. Buffer overflow protection)
The dll being referenced is "the generic NVIDIA Direct3D driver which handles all DirectX applications" . The first page on Google on a query with nvd3dum.dll gives 5 results where there are issues reported with this .dll.
It may be worth opening a parallel inquiry at the NVIDIA forums as the problem may be on their end.