TVH with Kathrein EXIP 418 - RSTP SETUP error -5 (SAT>IP) (opens in new tab)

Hi, I have just got rid of SkyQ and am trying to setup the Kathrein 418 with TVH\. I am having a nightmare with it - I have an Opticum Robust SCR 24UB Legacy LNB with a unicable set up to the Kathrein box\. I can get 1 stream rock solid but as soon as I open another stream with a different channel on a different device, both streams corrupt and I get loads of 'continuity errors' in the TVH logs\. I have tried assigning 'UDP RTP port numbers' to each of the 8 tuners but I get a '503' error whe...