You do not specify the firmware version of your friend, except you are that I see in .83, I think your problem is this firmware.
But if I understood correctly, in auto it configures itself at 60 fps instead of 120 fps, so when forcing 120 or 144 in Armory Create it works I don't see the problem.
For my part, I find it stupid that he is in 120 in car even without doing anything, I find 60 much better and even 30 even better.
Apple understood it well with its latest version of high frequency screen which goes much lower when you don't need high refresh, the battery saving is enormous