Comment 95 for bug 124159

That was at 5.5M.

Here's the same test at 11M
http://www.speedtest.net/result/214238098.png

And here at 24M:
http://www.speedtest.net/result/214238517.png

The trend is clear, increasing bitrate past 5.5M results in greater performance loss. Faster the bitrate, slower the transfer, ironically.