Im thinking that the OS 2.2 has really improved the function of my VIRUS RACK!!! Maybe its just that I can finnaly see the freakn' LCD screen.... Unfortuantely they have discontinued the RACK so I bet there will be no new OS>....
Im not sure if the knob issue is at play as I rewired my entire setup so I could use a Knob on my CS1x to record filter sweeps for the VIRUS.
I had a high quality MIDIMAN 2x2 and this isn't the issue!!! The only thing I know is that if your using the cutoff knob during a performance to dynamically control the synth it will Jump...!!!!!