At first I thought something was wrong with AT&T Fiber, I was getting 650 down and 950 up. I had the same service at my previous home and got 950 down and 950 up, so I felt the computer (late 2013 retina MBP) couldn't be the issue. I recently switched to google fiber and I still get the 650 down and 950 up, and we tested another computer on the network which got 950 down and up. So now I'm left to assume there is a hardware or software problem with the MBP. Any ideas? I'd prefer to do a total reinstall, but that's my last resort..