This could be one factor not also theres other things to take into account, Automatic updates, msn, yahoo, antivirus programs, antispyware software use up bandwidth, your rating, also high speed cable has many different speeds available to subscribe to and the do capping on regular downloads. you got 150kB/s and you did a speed test ""my download speed was 1159 kbps and my upload speed was 317 kbps"" so thats the best you will get from any torrent downloader or any download unless you improve you line speed outside of bitcomet, bitcomet is not the issue. 150kB/s is right for 1159kbps your upload speed should be set at 75% of your speed on the test you got 317kbps so set limit to 25-30 kB/s