try to turn up the preset Volume...
I could confirm some noise when i turn up the volume of the patch. Checked with the AAX in Pro Tools 11 and the VST2 in Cubase 7.5.
Switching on the FXs seems to remove the noise.
Usually i am using Matrix-12V with 2 additional FXs like the free Klanghelm IVGI saturation and the PSP NobleQ EQ to boost the low end.
Those already boost the volume so i don't have to turn up the volume in the patch that much. In that case the noise is not as obvious as without using those FXs (and with the built-in Reverb and Delay switched on it seems to be gone).
Ingo