1.3..Audio Analysis taking a very long time. Normal?

[JSE]

Still all normal behavior. It depends on how ‘fat’ your machine (cpu) is

Is re-analyzing normal after upgrading to 1.3? [Yes]

yup… see: relevant paragraphs: After updating to 1.3, Roon will re-extract file tags from your library and then re-queue your files for audio analysis. This can place some extra load on your core until that work is complete, so consider this when deciding when to accept the update. Starting in Roon 1.3, we have fully adopted the R128 volume leveling standards. Your music library will be re-analyzed automatically to extract R128 data, and the volume leveling features throughout the app …