akogot

Can you go into safemode with networking and run the same test. Also run a test from another test site and compare them.

what type of wifi router? and btw you can only block it if someone is using these programs unsecured. Best thing to do is actually limited each peer bandwidth. you can even give them a ratio of like 15% or something.

Can you tell us what WIFI service you have. If so I can look up what problem you have on your tower. Also more then likely you have a tower with one t1 line so MAX speeds are 1.5mbit. average should be 600 with you are less then -90dbm.