I have purchased a Mikrotik 433UAH with the purpose of Bandwidth management in the office.

Tried DD-WRT and all other consumer grade stuff.... nothing works, specially if you have users using P2P or the most bandwidth intensive software PPStream!

Why the QOS fail is because all P2P traffic is encrypted, so it just bypass the QOS and makan all the bandwidth!

Got Mikrotik and implemented a very simple PCQ Queue system. Now ever PPStream is limited and doesnt affect any users in the network.

What I like about the PCQ setup is that, if you have 1 user, you use 100% of the bandwidth, if you have 3, then its shared between the 3 users....etc etc

PCQ is a FAIR and effective.