The issue is related to TCP connection amounts it looks like, they are aware of the issue and are working towards a fix I think...
Basically, there are too many connections at one time (a single web page could have 100+ constant connections) and the system bogs down, thus getting the 11.x.x and 12.x.x state codes.
Diablo, if you are gaming, or download things, keep an eye on that list and see if 12.3.2 goes up... The main issue is 12.3.2 and 12.4.1, 12.3.4 is related to 12.3.2, as would be 12.3.3.
Also, if you get a 11.1.4, it can cause 12.3.2, 12.3.3, 12.3.4, and 12.4.1 one right after the other.
I smell a patch that fixes these issues most are seeing, and im willing to be the ones complaining about bad speeds have similar state code checks.
reply to diablo1892
One last thing to mention, heres my current list.
State Code Transitions Total Duration (s)
12.3.2 0 65
12.3.3 0 5
12.3.4 0 10
12.4.1 0 13
12.6.2 0 11
20.1.1 0 9
I rarely notice speed drops, unless the errors occur, and usually when they come along I also get disconnects.