How to use Cantabile Lite to monitor Different Virtual Sound Card output?

I have problem to use Cantabile Lite to Monitor 3 different Audio Outputs comming through virtual sound cards.

I just want to monitor this audio outputs phase. So that I use Stereo tool kit (VST pluging) and my routing diagram below.

routing diagram

Stereo Tool 1 plot is working and showing acual plot. But the thig is when I open other 2 plots. those are showing noise or somthing. not working smoothly.

Can anyone give me a solution or a suggesion to monitor this 3 audio output proprly?