Just go to the ROG Macrokey app to set the Fn + Numlock as a macro,something like this:click "REC" & press the keys that activate numlock & saveI'm a Diablo 3 player using this numlock autocast method too & I guarantee it works:

See here & here

No problem,in fact,the solution came from this thread.

Remove ROG gamefirst program.Most likely Geforce experience will be back to normal.

Mine is G752VT-T7020T,I also have issues with the left USB ports,but more specifically,when using USB 3.0 devices.I'm now using a very old logitech USB 2.0 hub to connect my mouse & seagate external HDD,both working fine no disconnections so far.:)