How to debug? Machine freezing when laser starts

FabCreator Machine FabCore
10

Laser plugged to a socket with just a smartphone charger. Other devices in the heavy-duty extension cord.

    • pulsing before the job HELPS
    • restarting does not help
    • with keyswitch ON > you need to pulse before job | with keyswitch OFF > works

Conclusion:
In order to make it work PULSE before job, but that is not a solution.

Any other ideas? Thank you