Sorry for not posting an image sooner.
The image shows a solid with and without Shatter applied. It seems to be the acute angle in conjunction with Shatter results in a horrible, unwanted blur.

Thanks for your suggestions on Particular, I had tried it actually, and Form but I was looking for volume that Shatter can add to the fragments, without depth it’s not a convincing floor. Unless Particular and Form can have 3d particles (like a cube). I couldn’t figure out how or if that’s possible.
It should be a 3D job I suspect, but I don’t have the knowhow, and this job doesn’t have the budget.