We recently merged two pull requests that improve the load time of the documentation. https://github.com/D-Programming-Language/dlang.org/pull/365 https://github.com/D-Programming-Language/dlang.org/pull/367 We should also merge these into 2.063.2 and rebuild the website documentation.
It seems to build just fine with the dlang.org from master. Not sure if merging into the 2.063 tag is actually needed.