Reply to Volume Q

Don't know if this issue has been discussed before but i'm having some sort of volume up & downs sometimes when i touch an eq knob or any of the input faders. I noticed it too when touching the pitch fader. Sorry if i'm not too specific about this but seems i can't replicate it whenever i want. If i do i'll let you know.

It happens with this setup:
TP 1.2.4
Tsi 3_5 glitch fix
vci100se
fw 1.3

Any guess?