Setup:
Windows 10 (sp 20H2)
MAME .252
Tankstick
Keyboard and mouse
2 AimTrak lightguns (firmware 9.20) (set as Device IDs 5 and 6)
When I have the lightguns unplugged, I experience no issues with the Windows or MAME. When 1 (or both) lightguns are plugged in, I quickly lose the ability to click with the mouse (or trackball/lightguns). The cursor will still move, but the task bar won't popup from being minimized, can't click to open folders, etc. If I ctrl-alt-del and left click a few times, I can then hit the cancel button and mouse functionality is restored, but this does not last long. I have tried the lightguns being plugged into the front and back of tower, and into a USB powered hub, and nothing resolved the issue.
When I open MAME (in the short period of time I can left click), all settings look fine - the buttons map correctly (I'm using a ctrlr mapping to hold IDs post reboot). When I try to launch a game, MAME black screens, and all I see is the cursor. This remains for about 20 seconds and MAME will close, and I will lose the ability to left/right click with the mice. I have tried leaving the physical mouse unplugged, reboots with lightguns plugged and unplugged, swapping the keyboard and mouse. I had the lightguns working on a windows 7 machine years ago running an older version of MAME. But since I'm getting weird OS behavior I don't think it's a MAME issue. Has anyone experienced this or have any thoughts on what might be happening?
Any help would be appreciated!