I’m curious what export times you are expecting? You do realize that you are export (1) Mixed resolutions, (2) Mixed frame rates, and (3) mixed codecs (ProRes, R3D, h264). So you’re asking AME to resize the media, add/remove pulldown, and transcode….that’s a lot in my book.
Given your hardware setup those times don’t strike me as ridiculous. Painful? Yes. Ridiculous? No (not given what you are asking of it). A 12 core machine would probably help a bit (but that’s probably not worth the $4K investment), but I’m not sure there’s much help to offer.
As for it hanging, you may better results exporting directly from the app itself – PPro or AE – instead of going through AME. You can still use your presets inside of those programs. Problem is in PPro you can’t que up several things to run. It’s a one at a time deal. Though AE does allow you to que up multiple comps in the render queue.
Ryan Holmes
http://www.ryanholmes.me
vimeo.com/ryanholmes