Lightburn locks up

I haven’t seen this, but here is something I would check.

Windows 10 devices have a Selected Suspend USB feature that turns off the USB Ports when they’re not in use. If the port ‘goes quiet’ for long enough Windows will turn the port off. Controllers that communicate quickly and have a large buffer (like the xTool) can happily complete the project with what it has in the buffer while the timer counts down.

it’s the only thing I can think of that might be responsible for the odd behavior you’re seeing.