Just install the libs locally. There is no reason any more to use on demand libs as the repos are now locked. So you basically download the same 100MB everytime you start cvpcb.
We locked the repos because we decided not to use the on demand github download for the official libs for the future releases. (One of the reasons is that the github plugin made it extremly hard to supply versioned releases of the lib. And having always the newest stuff might not be the best for most users. Especially not for beginners. And definetly not for people with slow or even limited internet access.)
For details on how do install a specific version of the lib locally look at this FAQ post: How can i install a specific version of the footprint library?