Stream drop out

Hi. Firstly system:
Innuos zenith 3 as roon core with ambre bridge endpoint to levinson amp/dac.
Roon controlled via app on iPhone.

Problem. The digital audio stream breaks up with network traffic such as surfing roon for music to the point where not a single track finishes. I have just restarted the zenith which appears to have cleared the problem but I have to do this too often. What on earth is going on?! I’m not certain if this is an iOS issue, network or core issue but it’s Very annoying. £k’s of system and interrupted streaming is very poor. I’m certain the network is robust. It’s as if a cache is causing issues. Please help.