I have a 1.25 hour project three cameras in 1080 using prores 422HQ rendering is about 19 hours! and about 400 gigs of content. I am looking for the best quality format but much faster rendering any advice.
Use a little ingenuity and render 10 seconds of material at 422HQ. Then 10 seconds at 422. Then 10 seconds at 422 LT, etc.
I can't understand why it's taking 19 hours to render. What format did you shoot? And don't dare say that you're using h.264 in the timeline. If that's the case, I might suggest you export an xml, download a 30 day free trial of premiere, and import the xml into that and render.
Do all of your cameras have the same properties? What's the frame size, frame rate, and compressor for your footage (click a clip and hit butterfly+9)
What are your sequence settings? (have the timeline active and hit butterfly+0)
These should match. If these are match you should be exporting at Current Settings (fast export) and then going into Compressor to convert if required.
Also, if you are reading from one drive and writing to another it can help on an export.