I currently have 21783 tracks. And here’s a screenshot crop of the current usage. Doesn’t seem to be much memory usage if you ask me. Still it makes everything on my Mac (except Roon) run slow. Same goes for my Macbook Pro that I use as a remote!
We are aware of a few reports surrounding high CPU usage on MacOS and are currently investigating this issue internally.
As for your specific case, can you please check to see if using RoonServer instead of the “All-in-one” version of Roon exhibits the same behavior? RoonServer is the Roon Core, but it has no interface and you can control it from the Macbook Remote/All-in-one on the Mac Mini.
I use the latest operating system on both machines.
I did use the Macbook Pro from 2014 as a core at first but switched to my newer Mac Mini because I thought the laptop was too old as Roon made the laptop slow…
Built a an 8TH Gen NUC with recommended i7 settings via the NUC KB from ROON. That runs great and is noiseless (except for my music of course) in a Akasa Turing case.
Here is my issue with my actual desktop device and slowdowns, stutters, and no discernible cause in Activity Monitor (OS X):
Took 2018 iMac i3 (32GB Ram) out of service as Roon Core and formatted and reinstalled OS X and my apps to use as a desktop device for typical email and office apps, my 2016 MBPro Fan was a jet engine running my 3 monitors so that had to go. When I open Roon (as a controller from All In One Roon App) on my desktop MM (Mac mini from now one) it causes any usual tasks to slow, stutter, and crawl. From just moving the cursor from app to app let alone opening safari links to typing, to highlighting text to copy and paste. I close the Roon AIO App and all is good in the hood again. Now for time being I will run Roon on my iPad and my iPhone until this is resolved but please keep us updated on a resolution. If I can offer any diagnostics please reach out and I will provide.
I am also using a 2018 Mac mini for my Roon Core and have the 6 core i7 version with 32GB RAM and 256GB stupidly quick SSD. Roon playing a 44.1/16 FLAC file to my microRendu takes approx 60% of the CPU of the core which seems very excessive to me…
I have tried toggling wifi and this has no affect. I am using a wired network connection for the microRendu.