[oceanman888]

I only ride fixed so not an expert on groupsets but people using upper end shimanos does not seem to have that much tunning issue.

maybe you yours is damaged or sth?

[jacquesm]

Or mismatched. It's not rare to see people upgrade their bikes with newer gear but to end up with grips that are set for 8 or 9 speed and cassettes and derailleurs with more speeds. That tends to get very awkward.