Create a 3d Shape with a curved edges when extruded

Hi, 
I am creating 3d shapes in After Effects by making them 3D, Changing render settings to Cinema 4D and then  under Geometry Options i'm selectingConvex and expaning the Extrusion Depth & hole Bevel Depth, but when i trutn my spae to the side the edges are harsh and i want them rounded. I tried adding 'round corners' to my shape but this doesn't help. 

I tried to redo this in After Effects Beta incase there where any additional settings but nothing i could find.... (doesn't mean its not there i am a noive at all things AE)

Does anyone have any idea on how i could round out my edges....
(i've added a layer over the top of my shape to give it texture, but can't make this 3d so it doesn't move well with the shape so any tips on that, i've fudged it for now...) 

Thank you so much for any advice/tips/ ideas