I haven’t problem with input connections but with forward. And I found something about fasttrack: “The idea is to “fasttrack” some specific machine without slowing it’s traffic for processing. Let’s say you have a network of users, you have firewall and queues for them. But then you have a VIP customer (or your own PC) that you will not filter or slow down, and you want the best available speed for it. This is the situation for fasttrack.” (http://forum.mikrotik.com/t/fasttrack-new-feature-in-6-29/87517/1). So I think fasttrack isn’t for me.