Yes, probably interference from plasma. The idea is to put the plasma tube as far as possible from your computer and generators to avoid plasma energy entering the data cables. Always use the USB cables with ferrite rods, and keep your cables tidy. There are plenty of posts dealing with that issue. Please, use the search window to find them.
You can start the session from scratch, then hit pause, set 13800 (3h 50min) in the dwell window, and hit pause again to unpause. The session is running now from the point it freezed.
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