When use spline wrap deformer for instance motion blur doesn't works. That's disappoint coz as I remember well it was work in earlier beta versions. But with crushes.
C4d r20, Corona release version (trial)
I wait this feature really long time, Corona render is much better and faster (in many cases) for artistic control than other renders. GPU included. Very cool. I try use it in motion design but every time facing with MB issue.