UTP seems totally useless to me, in fact it exhibits symptoms of exactly what it's supposed to solve. That is congestion of my line to a point where it's not usable anymore. I have ~10Mbit/s down- and ~85kB/s upstream, done some testing with utp only, mixed and I am now back at tcp only. I capped my upload to 50kB/s this is the ping statistics to a host I have pretty much exactly 15ms latency to if my line is idle: Approximate round trip times in milli-seconds: Minimum = 41ms, Maximum = 67ms, Average = 52ms Web browsing, SSH to my server etc. is still smooth. With utp this goes in the upper 200-500ms with the occasional spike to 700 and more, even timeouts. Funny thing is: -upload in uT is slow -download in uT is slow And everything else pretty much grinds to a halt. I tried bandwith management on/off, calc_overhead on/off (utp overhead is ridiculous btw if it's displayed correctly), lower settings for connect_speed... nothing helps. So I guess my question is: what's killing my line if it's not the bandwidth (works fine with higher up/down in tcp mode)? I already set a global max. of 120 connections, so unless utp disregards this setting I'm at a loss whats going on here or how this is supposed to be better or if it's just me?