Hello @bruce_bosler1, and thanks for your report! We have seen other reports like this recently and are currently working towards a solution. Could you please try disabling Wi-Fi on the mac and see if this brings usage back down to normal? That’s been working for other users experiencing this.
I’d also appreciate it if you could send me screenshots of activity monitor when this issue occurs so I can report the % utilization with the other users. Thanks!
I have a Mac Mini 2018, (16GB Mem, I7, 1 TB SSD) that has two heat problems related to high cpu utilization. One is Roon related the other is not.
The Roon related problem revolves around awakening the Roon dedicated Mac Mini from sleep. I allowed the Mac to go to sleep when it is not being used, meaning I’m not playing music on Roon. When it wakes up Roon consumes a large amount of CPU, (about 25%) and heats up to 180-200 F. At first I thought that Roon was catching up after being asleep, but it was going on for a sustained period so I decided to restart Roon and the problem went away. On the second instance, Roon went for about an hour until I heard the fan noise in a break from hearing some loud music. So, I restarted Roon and the problem went away. Lesson learned, don’t let the Mac Mini sleep. Everything is working fine now.
My second issue is with the kernel task running high CPU while playing music. This was iTunes at the time so this is not relevant to Roon. However, when I reported this to Apple, their response was that this was because of an eternal connection and not the Mac. The only external connection to Mac was a Netgear switch to which it was connected. I have other devices connected to this switch which includes a Windows laptiop, Apple TV, Roku and an A/V Receiver. I even connected a Linux computer and my son in law’s Macbook pro to the switch and none of these connections had problems. I solved it by connecting the MacMini to an Apple Airport Express in pass thru mode to the switch. My Mac Mini has failed where other computers and devices haven’t. With the work arounds, the Mac Mini works fine now and I’m is no mood to upset the apple cart.