IMPORTANT: This issue will only impact versions prior to 10. Version 10 of VDM comes completely optimized during the installation.
If you are experiencing slow load / startup times for the 64-bit version of VDM, running the following command may significantly improve / speed up performance. Launch the command prompt as an administrator and run the following command/script:
C:\windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe install "C:\Program Files (x86)\BridgeWorks VDM\VDM64.exe"
Please note that you may need to update the path to C:\Program Files (x86)\BridgeWorks VDM\VDM64.exe to reflect your installation.