Surely passing library paths using forward slashes instead of backward slashes to MSVC linker won't have any effect on linking performance? Haha nope!
@reedbeta it was fun bisecting when that happened. "Oh look! Aras, your upgrade to VS2017 15.5.2!".
Me looking at 15.5.2 release notes: "we've optimized incremental linker so it's never slower than full link". Hmm... so it's never slower, because it's always full link now, eh?!