In the same boat.
I have a script to restart the roon server nightly, overnight. Just easier that way, then I don’t have to worry about it.
But if I don’t then after 3-4 days it slows to a crawl.
The latest release notes did mention a fix for an issue of slowing down remotely until a UI freeze, not sure if it’s related but we’ll see.
Edit: yes seemingly should be at least helped by this new release. Will try and report back. Memory Leak in Roon - Solved Update to Build 970