this is a known initialization problem with the device.
try starting vvvv.exe with the commandline switch
when you want to go fullscreen on the secondary monitor. or
if you want to go fullscreen on the primary monitor (which should be the default anyway and work already though…)
thanks for the suggestion
unfortunately it doesn’t work,
in modality fullscreen the patch wave02 doesn’t make the effect water, neither in the primary screen that in that secondary, in modality window only in the primary screen.