Yes, our Victron accepts the NextGen power without prior loads. So does our Iota
90A, although the Iota causes the generator
output voltage to increase from 125V to 135V. I think this has something to do with the lack of power factor correction on the Iota confusing the generator regulation. I get the same response out of the Victron when I turn off its power factor correction.
Ours is the capacitor regulated generator and not the AVR. The frequency jumps all over the place when measured with a frequency meter, but becomes a steady 60Hz when a resistive load is applied. I think there are a lot of harmonics that confuse the meter and that resistive loads either remove them or act as electrical
ballast to make them smoother.
We also seem to blow the regulating capacitor every 200-300hrs. I wish I could figure out why. I have moved the capacitor externally into a cool place and checked all the wiring
connections on the generator end, the panel end and all the loads. There aren't any unusual loads on the system. Luckily, the capacitor only costs $10 and changing it now that it is external is as easy as changing a lightbulb.