Thank you for touching base with me and providing the requested feedback. Both are appreciated, @Michael_Van_Oostrom.
I reviewed the specs for the device currently hosting your core (i.e the Synology DS216+ii) and the unit’s CPU is below our recommend spec for hosting RoonServer on a NAS (intel Celeron N3060). From our CTO on suggested hardware to use with Roon:
CPU cache is also really important to an app like Roon. Some CPU series (Celeron, Atom) are severely cache constrained. Once you get into Core i5 territory, there’s enough cache to go around, and as usual, a top-end CPU will confer an incremental performance benefit above that.
In light of the above, I would recommend testing with your Roon core on another device with a stronger CPU to confirm if performance improves. Let me know how the test goes and if further assistance is needed I will be glad to lend a hand.
-Eric