Building is slow!

[Ivan Trombley]

I want to revisit this issue.

Building 64 bit on Linux, release or debug, is fast. However, 
building 64 bit release on Windows 10 is super slow. I have a 
cross platform app that uses gtk-d. Today, I updated DMD to 
2.079.1 and the gtk-d lib to 3.8.0. When I performed a debug 
build on Windows 10, it only took a few seconds to build gtk-d. I 
attempted to build release but canceled the build after a couple 
of hours. I tried building 32 bit release on Windows and while it 
took a lot longer than debug, it still completed in a reasonable 
amount of time (it wouldn't link, though, probably because I'm 
missing some 32 libraries).

Does anyone have any idea why 64 bit release builds on Windows 
would take so long?