Using Wine Staging 7.17 on Arch.
I get very slow download speeds - like 2MB/s. Loading times for WoW have also significantly increased.
So I went on Windows, and it was exactly the same thing.
I’m truly not convinced this is a bug in Wine, though of course it might be. Either way, I hope Blizzard looks into it.
There seems to be no effort to actually block Linux users. If that is what they wanted to do that is very easy - there’s literally a registry key giving the secret away instantly, and trying to make direct kernel calls is also likely to end in tears.