Likely Audiovarna is not decoding aac at 44.1/24 Roon does and it’s this bitdepth switch from the same sample frequemcy but different bitdepth that causes the issue and it is been diagnosed as DACs with xmos chipset but not all of them. It’s already been logged with XMOS as a bug and Roon have contacted DAC manufacturers.
Read this DAC issues with XMOS usb chipset and Roon on Linux