[Amanda Inberg]

Hey not sure if this helps, but I found this yesterday
https://www.thepixellab.net/beginning-c4d-101-motion-blur-cinema
in the comments, a guy named Mike says you can set the anti aliasing to “none” and it will smooth out the GI flicker and give you better anti aliasing. I’ve never tested this so I don’t know if it’s true.
This is for using scene motion blur though I think.

For a project I just worked on, I used the multipass motion blur, which is super quick, then used RSMB in after effects and it worked really well.