PTR Download too large?
"Copy your game install, then patch it up with the new data like it does on patch day" like they did with every PTR I did from 1.10 to 3.3.0
And instead opted for the
"Copy part of your game install, then download 8.7GB of stuff you already have + 100MB of new stuff" method.
The way they'v chosen now is to get you to install a Base PTR in a separate installation of wow then update that. This folder gets updated for each PTR that comes out so they prefer you to not ever wipe the PTR folder.
If you had a PTR from say 4.0.3 it would of just updated that to 4.0.6
Unfortunately the sticky that has the info about installing it is out of date - it recommends deleting the PTR folder and has some stuff referring to a wow test folder.
The sticky on the old EU PTR forums had this from a Blue :
The PTRs are using a new system wherein a permanent copy of the game client can be kept on your hard drive. As you connect to the Public Test Realm, the latest build of the PTR will be automatically downloaded to your computer. There's no more need to delete your WoWTest folder between PTRs or download new builds! It will all be handled from this one installation from now on.
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I also had to turn off P2P downloads. It was monstrously slowing down my download speed. Turning it off made my download speed go from 200kb/sec to 2mb/sec.