It's because their matching software just isn't that good. There's really no excuse for it not to do better, and no visible improvement in the years since the service first launched.
Still having problems here.
After 5 hours it appears to have ground to a halt.
View attachment 476909
Since I am also still having problems here in Europe (Germany), I talked to the German iTunes Support today and they said, that the problems are caused by server problems on Apple's side. They are working on it and said they are awaiting a fix on sunday (20th june 2014). If it shouldn't work again by monday, I should call them again.
As a temporary workaround they proposed to sign off from iTunes and itunes Match. Restart the router (so the internet connection is reestablished) and then connect to itunes Match again.
Hope this helps you guys![]()
Wow, no "it just works" snarky comment yet? I'm shocked.![]()
I found that by downloading a bandwidth limiting app such as Entonnior and setting upload limit on HTTP and HTTPS to around 128 kbps tracks magically began to upload again with no issues.