The BSOD occurred when I tried to change Settings in the driver window (primary machine).
Is it in the display settings window? Or spacedesk server menu settings?
Can you specify which settings exactly are you trying to change?
After installing the driver the Win10 starting Menu stopped working. I had to reboot the computer.
Is it consistently happening? Or only after installation?
It seems like a window explorer is crashing or hanging.. To verify, when it happens again please open the task manager then find the Windows Explorer, right-click -> Restart it. Then try again to click/open the Windows start button.