Visual Studio 2015 or 2017 for cooking?

Hello,
Which of the Visual Studios cook faster 2015 or 2017? I use the 2015 version and it is really slow.

Cooking or compiling? I use 2017 community for compiling and don’t remember it being slower or faster than 2015. Compiling in 4.21 does seem a bit faster than before (could be header cleanup) but I don’t have metrics to back that up.