The freezing is likely due to a disconnect and unrelated to potential duty cycle issues which would be a separate issue.
There’s a lot of debate about how hard a laser should be run. The danger of running too high and too long comes down to heat mitigation and diode lifespan. I recommend you follow the manufacturers recommendation about this. I believe for Ortur they don’t discourage use at 100% power but the expected lifespan under those conditions is basically one year.
You can read more about my specific thoughts on that here:
As for the disconnect of the laser I suggest you do some searches on this forum as this is a common problem. See if any of those scenarios fit your specifics.
If not, circle back and describe the specifics of what you’re experiencing and I’m sure someone would be able to help.