At home, we have a pretty slow internet connection. So whenever I perform my online backup, I hear cries of dismay since Hulu stops playing. So after trying to find a nice and simple solution for throttling my network throughput I found a system preference called „Network Link Conditioner“.
It comes bundled with XCode. You can find it under:
/Applications/Utilities/Network Link Conditioner/
Double click and you will have it in your system preferences. I know that there are more advanced ways of doing it – but you should have a look at this. For me its good enough.