keppn

Here's a nice setup from VideoCopilot for your exact need. It's not too hard to build and works really well:
 
 
 

Try these custom shutter settings, those smooth everything out quite well: 

In the cloner, swith from "Render Instance" to "Instances", then it works. 

Hey Ras, 
 
you can add multiple audio-files to the timeline: 
Make a null object Drag it to the timeline (dopesheet) In the Dopesheet: Rightclick -> Add Special Track -> Sound
  Now you have multiple audio-tracks in the timeline. In the Attributes Manager, you can "mute" a track by unclicking "use sound". The respective audio track will be grayed out, so can see in the visual representation which audio-track is active. 
Muted tracks can still be referenced by other parts of C4D, so this should work for you. 



Please make it a habit to render out only image files from C4D. Sound and Effects should be added in AfterEffects/Premiere/Whatever. Directly rendering movies including sound is quite prone to error and not as flexible. 

I made a quick test to compare rendertime with Redshift on a RTX4090. 
Resolution is 4000 x 10000 px, Rendertime ~ 55 seconds. 
So yeah, changing engines would most definitely speed up things, even on other GPUs. 

Whatever works! 😄
Also, sometimes it's just the time to walk a new path, even if the first walk isn't the fastest. New tech tends to pay off tremendously down the line, so props to you! Thanks for sharing 🙂