Visual D "Multiple object files" TypeInfo errors

[Alex]

"There is a multiple objects file option but for some reason it 
causes the project to fail with unresolved externals from 
TypeInfo.* so I have no idea if it actually does anything or not."

When trying the option to maybe speed of compilation I get a 
bunch of errors:

error LNK2001: unresolved external symbol 
"TypeInfo_S3std5range__T6RepeatTAyaZQm.__init" 
(_D37TypeInfo_S3std5range__T6RepeatTAyaZQm6__initZ)
phobos64.lib(timezone_342c_37a.obj) : error LNK2019: unresolved 
external symbol tzset referenced in function "nothrow @nogc @safe 
bool std.datetime.timezone.LocalTime.singleton().__lambda3()" 
(_D3std8datetime8timezone9LocalTime9singletonFNeZ9__lambda3FNbNiNfZb)
fatal error LNK1120: 81 unresolved externals

Compiles fine without the option.