I have been trying to figure this out, for me it is not just slow, it become unstable and stops working…Roon Logo spin for minutes: until I close & reopen Roon Core app. This will buy me another 15 minutes or so. I think it is some sort of memory leak issue with 2.0
Here is a link to my support request and update as I continue to test and attempt to resolve:
and here is a post with what looks like the same issue from Andrew_Cherry