Hey,
I entered the code for Beta 4 and downloaded it. Sometime there is no traffic on it so i revert it back to Beta 3, everytime i switch version it look like steam is redownloading a patch.
My question is, does steam really redownload a patch each time i switch version or it simply look like it but instead just install another patch saved on my PC.
For me its a little important as i dont have illimited bandwith 
Ty
