Jumpy variations

Hi all

Playing with ftmulti I noticed that almost all variable fonts exhibit jumpy h=
eights and advances when varying individual axes, instead of monotonous chan=
ges. I could associate this weird behavior with the bytecode hinting. Withou=
t it or with autohining, the heights and advances are changing smoothly.

I could see how hard it is to write smooth bytecode. What is your opinion ab=
out this interference. Should FreeType fallback on auto hinting? Or just ack=
nowledge and ignore it?

Thanks
Alexei=