We do our deployments like this
We created a .bat file with the following in it
@echo off
robocopy \\SERVER\EpicorClient %SystemDrive%\EpicorClient /S /E /Z /ZB /R:5 /W:5 /TBD /NP /V /MT:16
robocopy \\SERVER\EpicorClientShortcuts %USERPROFILE%\Desktop /S /E /Z /ZB /R:5 /W:5 /TBD /NP /V /MT:16
At the first server location it had all the files for install
At the second server location is had all of the shortcuts
We also now do our shortcut via group policy update
You have to run the .bat as Admin
On the local network it takes about 30 - 45 seconds to install