I don't blame you for using Synapse. I know it's kind of the only obvious way to check/alter certain things on Razer products. I've just heard that it's a dumpster fire to use lol
FWIW, the Great Mouse Crisis was handled a few days ago with the purchase of a new, inexpensive Logitech mouse by Lego's Dad. The Logitech mouse that did not work was quite old. When I looked up the model number, it said Windows 7. I suppose we should not save every old piece of electronic equipment for "just in case" times.