I did not find a topic on this.
For months, my BT mouse regularly becomes unusable due to extreme tracking stutter. D3 is installed on an external SSD. Stutter occurs even when no Blizzard app is running - but only when I plug in the external containing a Blizzard folder. Problem occurs whether or not Battle.net app is running. Problem does not occur when Blizzard folders are absent from the hard drive. Problem does not occur under other circumstances. To recap: I plug in the external containing a Blizzard folder; extreme mouse tracking stutter.
Sometimes it doesn’t, usually it does. When it does, the mouse is typically unusable. Restarting PC or Explorer seems to be a crapshoot.
HP Pavilion gaming laptop, Windows 10 Home 64-bit. Suggestions?