iOS as end-point suffering drop-outs

I am hearing drop-outs every few minutes when streaming to my iPhone as a roon end-point. The iPhone is connected to a Chord Mojo which is driving a part of headphones. I don’t have this problem when streaming Tidal (lossless). The Bluesound Flex which is in the same room has no problems.

–Mark

What bitrates are you using? wifi is not the greatest for higher bitrates