Downloading over 100 MB/s -> down counter doesn't increase

When downloading over 100 MB/s, the down counter (in the overview pane) doesn’t increase. Bug or by design? It works fine when below 100 MB/s.

I use Whatpulse 2.6.1 on Windows 7 SP1 x64 Ultimate.

This is by design, have a look here:

Thanks. Why excluding people with a 1 Gbps connection or above?