If anyone is interested - Rig can reboot due to static voltage. The fact is that the classic PC is a Faraday camera with a grounded case. For stability, Rig should be closed at least in the metal mesh connected to the system's zero bus.
I have wooden rigs, what can i do?
You need to cover the body with metal mesh walls. The grid needs to be grounded, that is, to be connected to the neutral wire. When a motherboard is installed in a PC, it is immediately grounded - this is a very important point. But the RIG good is assembled from the metal corners.