here's a scene (quick&dirty as you say) done twice:
1:
animation done 24 fps and rendered with "step: 2" setting in the render options. 70% moblur, 5 passes. detour AE to convert to 24fps again.
Click to view attachment
2:
previous animation scaled down, then spanning only 12 frames; Tools - Options - 12 fps; in render settings 12 fps. 70% moblur, 5 passes. detour AE to convert to 24fps again.
Click to view attachment
i'm going somewhere specific with this, testing stop motion feel and wanting moblur to create something, anything for me.
too new to this to understand about the passes, maybe 16 would have created better blur.
