I recently splurged on a Sonos sub, arc, and 2x era 300s setup for the best Dolby atmos music and movie experience.

Using just the Era 300s + sub gives the best music experience. The moment I add the arc, the eras use the surround profile, where they don’t use all their speakers. This provides a much worse listening experience.

I do not want to have to reset up the eras and sub each time I’m switching from listening to music to watching a movie.

I imagine there are a couple different ways to fix this issue, but being to change the surrounds profile manually from music to movie seems the easiest to me.