Hi everyone,
My apologies that this thread auto-closed. The reports you provided fourteen days ago have been helpful as we work to debug the constellation of issues underpinning download performance, as well as incrementally improve overall performance in ARC and Roon 2.0.
The latest release this week (ARC 1.0.4, release notes here) will hopefully continue to resolve this for those affected. Please let us know if that’s not the case, and we’ll eagerly investigate.