the LfoDevice is great feature but the functionality isn’t correct i think:
it’s not possible to make a lfo with a low amplitude (10%, offset is 0%) that creates a effect-values from 0 to 10 (e.g. if the complete effect-range is 100)
i think the lfodevice works not logical yet or it’s a bug … don’t know …
the lowest value of the amplitude should be the offset-value!
I didn’t write this, and I haven’t tested it much, but I’d think that the offset is the center of the lfo output, so try setting the offset to 5% and amplitude to 5%. Correct me if I’m wrong, I’m just guessing here (this is how I would think it should work).