CurvatureFlowImageFilter slowdown on Mac

Hi.

I’m using CurvatureFlowImageFilter.cxx example.
My Linux machine works 50% faster than Mac.
Both have 16 cores and DefaultNumberOfThreads() returns 16

Linux: - 16gb RAM, i7, 2016, SSD.
Mac - 16gb RAM, i7, 2017, SSD.

And the same story for MinMaxCurvatureFlowFilter.
Thank you
Hrach