I suspect OP has some kind of OS issues causing conflict.
I have cores on both Windows 10 and Ubuntu Server. All Roon cores are dedicated and run nothing else material.
Thanks I am trying throttled. We’ll see if that helps.
It does bring up another point about the Roon software, however, which is that its error messages are generally not helpful in troubleshooting. One message I see when Roon is having this problem is "media is loading slowly" - well it may be loading slowly because a Roon process is killing the software’s responsiveness - i.e. it is a local file on a HDD in the server. How could it be loading slowly other than because Roon is killing itself?
I honestly think that library composition and use of various things like Roon Tags has a lot to do with this. That would explain why problems follow from server to server. Roon should deal better with unidentified albums, for example.