You should also compare the specs of the host machine. Maybe your boss's host machine is a 4C/8T i7 with SSD while you have a low voltage i5 that throttles with 5400rpm hard disk. That's why he is the boss and not the other way around. :smileylaugh: The difference in storage type alone (SSD vs HDD) can make for a noticeable difference.
You could attach an output of the dxdiag of the your host machine and that of your boss's machine.
You also tagged your post with Workstation 12.1. It is best to update it to 12.5.9 (it is a free update for 12.x). 12.1 is quite old and there have been numerous bug fixes along the way.