That sounds just about right for the complexity of the comp and your machine's specs.
If you're trying to use ray-tracing, know that it's an obsolete feature in AE, not to mention a REAL time-suck. So don't use it.
9 minutes is a VERY long time for a composition in Afrer Effects. You should not render the whole 9 minutes in Ae if, like you say, 2/3 of it does not even have effects applied.
The workflow should be this:
1. Render only the parts with effects in Ae with a production codec like Quicktime Animation.
2. Assemble you footage and the Vfx shots in Premiere together
3.export in Premiere to the required delivery format you need - more often than not, it's a playback format like H.264 mp4 file with match source - high bit-rate default preset
other than that, compositing and Vfx can take a while to render. It's not umcommon that on some frames it could take a few seconds a frame or more. it all depends on on your setup. Read this for tips on improving performace in Ae :Improve performance in After Effects
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