The mouse functions somewhat. In the menu screens, for instance, if I move the mouse, it will periodically highlight items which I can interact with, but I have to use the ENTER key on the keyboard to actuate the control, while it is highlighted by the mouse.
In the player's inventory, **//`if`//** I can highlight an item, I can click on it and drag it out of the inventory, or I can drag it to the quick bar.
At all times, however, the mouse pointer is completely invisible and using the mouse is incredibly time consuming, due to the hit, or miss nature of trying to highlight the desired object/control.
This is very annoying in the menu area, but it is a game breaking problem in-game, since simple gestures, which should take only a second, now take several minutes to execute.
I am using an EVGA Torq X10 mouse, with the default, Microsoft provided, Windows 10 mouse driver, ver 10.0.1493.0
**
NOTE: I have discovered that this problem is only present with the "Display Pointer Trails" option enabled, in the "Mouse Properties" "Control Panel" configuration screen.