We looked at the logs you sent, and we’re wondering if maybe our move to 64 bit exposed you to a bad plugin of some sort. We’ve seen similar symptoms due to this in the past.
Would you mind looking over /Library/Audio/Plug-Ins, and /Library/Audio/Plug-Ins/HAL and letting me know what you’re seeing there? I’m guessing we’ll find something non-standard in there, and moving it aside will resolve this.
Feel free to let me know the contents of those directories here or via PM and, if you want, try moving plugins aside and restarting Roon. If you do decide to move something aside, what would be great is if you don’t delete the plugins – just move them aside. If we can find the culprit, we’d love to have a look at it and see if we can do better.
Let me know if you have any questions @stevev1 – looking forward to resolving this for you soon!