Layout 2017 slower than 2016


#1

Hi, why my Layout 2017 pro is sooo slower than 2016?!
My experiment: Same file su+ lo 2016 and su + lo 2017 = 2016 is 3 times at least faster

OS Capitan Mac
MacBook Pro (15 pouces, mi-2012)
2,6 GHz Intel Core i7
16 Go 1600 MHz DDR3
NVIDIA GeForce GT 650M 1024 Mo