I've recently decided to come back to Roon. Suddenly I experience issues with my Lynx AES16 card (output over AES). More often than I'm willing to accept, I don't get any sound, and the ADI-2P doesn't seem to get an input, although Roon seems to be playing music without errors. When I play over jRiver it all works well... ...and USB works every time. It seems that if I open jRiver and starts playback, something happens with Roon. I then have to reboot computer to get sound back in Roon over AES. Weird.