Hey @Ben_Katz,
Good to know that you aren’t seeing that anymore!
With audio analysis turned off, you’ll instead be utilizing on demand analysis:
The entire library is analyzed in the background, and when you start playback of an un-analyzed track, audio analysis is performed on demand.
By default, Roon devotes roughly 30% of one CPU core to the task of background analysis, and uses 100% of one CPU core for on-demand analysis. While these defaults make the performance impact of audio analysis less visible, it also means that it can take a very long time.
If you have any questions just let me know!
-Dylan