Both my husband and I have beta. I've had it longer than him, so I've got everything but the latest updates.
After I opened ports on my PC, I was able to download everything in about 4 hours. However, opening ports on his has done nothing - 10 local connections and 0 remote, so he's showing 22 hours.
Can I transfer the files from my pc to his, and if so, would I just transfer the folder Square Enix/Final Fantasy XIV Beta Version? If I can do this, should I then also delete certain files in that folder so his PC doesn't have my character data?