Performance regression in frame_methods.Apply.time_apply_ref_by_name
https://pandas.pydata.org/speed/pandas/index.html#frame_methods.Apply.time_apply_ref_by_name?commits=91802a9ae400830f9eaadd395f6a9b40cdd92ee5

https://github.com/pandas-dev/pandas/commit/91802a9ae400830f9eaadd395f6a9b40cdd92ee5 (cc @jbrockmendel)

Also affects other benchmarks that probably use apply: https://pandas.pydata.org/speed/pandas/index.html#frame_methods.Nunique.time_frame_nunique?commits=91802a9ae400830f9eaadd395f6a9b40cdd92ee5.
