High CPU and memory usage by core

[David_Naumann]

Roon Core Machine

Windows 10 Pro
Dell Optiplex 7070
Intel i7-9700 @ 3GHz, 8 core
16GB RAM

Networking Gear & Setup Details

Server running the roon core is hardwired @ 1G to Eero network
Remotes and speakers all connect wirelessly over Eero mesh

Connected Audio Devices

6 Sonos devices of varying types
Cambridge Audio CXNv2
Dutch & Dutch 8Cs

Number of Tracks in Library

~140 albums
~50 local tracks, the remainder via Quobuz streaming

Description of Issue

About 6-8 weeks ago I noticed Roon becoming unresponsive via several remotes (all iOS or MacOS based). Sometimes audio drops also occur. When I look at my server cpu/memory utilization, I see the roon core consuming a large amount of memory (~2.5G) and spiky amounts of CPU. The CPU utilization will spike to 80% of available CPU. This happens while roon is idle, no music playing, and will persist indefinitely. If I restart the core the behavior goes away, but it’ll usually revert to this behavior within a few hours of using roon again. I’ve been using roon with this setup for the last year+ without any issues previously.

[David_Naumann]

I think the plots below tell the story. I shutdown the roon core around 2pm. Prior to 2pm the core was running, but was not streaming any music. It was sitting idle.

Before/after CPU utilization:

Before/after memory utilization: