[Ignitionnet]

Also further to this if connections are not sealed properly outside noise can get onto the network which then gets amplified and aggregated together with other noise from people on the node.

That said tech support should be able to see your upstream SNR and power level which should tell them all they need to troubleshoot it. If SNR is low but power ok it points to a noisy network, very high power points to issues with return path amplification. SNR being bad can even cause modems to increase their transmit power.

You should be able to get the upstream and downstream stats from your modem, it'd be useful to see these and see if your modem is transmitting at a high power in an attempt to 'shout over' any noise on network.