I have the same issue. 8Mp camera works in W10 camera tool, with full resolution and frame rate, but Lightburn freezes for the better part of a minute then does nothing. It’s not a permissions issue. If I try with Lightburn on my Mac laptop it works perfectly, but not on the W10 computer regularly used for the laser. If there’s a link to something that fixes this issue, maybe it should be posted somewhere public?
EDIT: I found the link to a beta version here Starting the Light burn camera but it has the same outcome, still not working.
EDIT 2: I use powerful tech-support-fu and rebooted the computer after installing the beta version and it works now!