Density control, better way ?

Hello everyone, i am having a few issues with the density parameter of a granulator patch
i am building.
Basically on the patch below the way phasor~/ rate~ work introduces noise when changing the density control (with the exception when not in sync..)
I only seems to get a 'clean' sound with integer values, giving me though a very 'quantized' result.

the density control:

any ideas for a better way or perhaps a somehow to remedy this ?

cheers

G