@GRL Thank-you for the advice.

@GRL My testing has concluded for now. One of the configuration settings tried while testing was to enable the VLAN QoS Queue setting and set the queue to 7. Later, a log email was received with the...

@GRL I did go back to the previous version and it did not seem to make any difference. I have now moved all the devices (except the TV) to a makeshift test area and am in the process of monitoring...

@Vincent-TP Thank-you for the clarification.

@GRL Thank-you for your response. I did try the multicast settings but they made no difference, both with the upstream switch as the querier and querier set to none. I have just replaced one of my...

@MR.S Thank-you for responding. I read that post but it didn't provide any help. The multicast VLAN is a dedicated VLAN with only the ISP router (which acts as the multicast streamer and IGMP...