Hi,
I’m working on a variable font with 24 masters including Italic/slanted instances, but the Italic curves between masters are very irregular and bumpy do to the TrueType curve conversion.
Does anyone have any great trick? Would it make sense to increase Units per Em for higher level of detail?
Thank you 
Can you send me some examples where the curves are bumpy (send it as private message or email if you can’t show the design)?
The bumpiness may be due to the kink problem (see the Multiple Masters part 2 tutorial). In that case, that would be a basic problem of linear interpolation: changing distance proportions and angle of 3+ points in a line will cause a kink.
Thank you! I think I’ll find the solution there