Cut speed changes with file transfer

I have one copy of Lightburn on a desktop PC, where I do design work, and a second copy on a PC laptop, which I use to control my OLM2. When I transfer files from one computer to the other, whether by email or thumb drive, everything remains the same, except cut speed. That changes by a factor of 60: cut speeds of 1000 on the desktop are transformed to 60000 on the laptop; cut speeds of 1000 on the laptop are transformed to 16.7 on the desktop. This happens for all layers. Obviously, i have some setting wrong on one machine or the other, but what setting is it?