Can't set netsh int tcp set supplemental

Question

Hello!
Seems like I can't operate within netsh int tcp set supplemental preferences. When I try to set congestion provider the 'old way' with
"netsh int tcp set global congestionprovider=ctcp"
in elevated command prompt, Windows 8 saying that I must do it now with
"netsh int tcp set supplemental"
But that doesn't work either. All I can do with that new command is set template, but only one is available - "internet", and it's already set to it.
I want to set ctcp, ICW and minrto, but I can't, here's what me getting:
http://s10.postimage.org/jrpkudg53/suplemental.png
The syntax is right, even example doesn't work.
The problem exists in Windows 8 CP, RP and in this build.
Sorry for my English. Thanks in advance.

Answer 1

gsilva stated:  "One misconception I'm seeing above is that the CTCP is not the default congestion provider on Win8 machines.  By default, CTCP is set as the congestion provider on the Internet template and so it also the default on all Win8 machines."
There's an excellent reason for this "misconception."  If one types netsh int tcp show global the display indicates that the Congestion Control Provider is in the "none" state!!!!
So if, as you claim, CTCP is set as the congestion control provider in the Windows 8 default Internet template, please explain why the display referenced above says that the CTCP state is "none!"
Also, I've spent the last five hours trying to figure out how to manipulate the CTCP state on my Windows 8 laptop and have ended up precisely nowhere.  As I understand, the default TCP template is the Internet template, and that is read only and cannot
be modified.  Okay, fine.  As I understand it, I can switch between templates depending on my needs.  One of those templates is called Custom, and that would be the template for me if I want to toggle or otherwise manipulate CTCP, correct?
But then I bump into another problem.  As I understand it, in order set a particular TCP template as the current active template one types netsh int tcp set supplemental followed by the particular desired template.
For example, if I want to load the Internet template, I type netsh int tcp set supplemental internet.
Well, I'm bumping into another problem.  When I type netsh int tcp set supplemental custom I get ungatz, nada.  All I get is the message "Set supplemental command failed to set the global default template."
It's almost as if my laptop is missing all the templates but the Internet one.  I tried a few of the others, like datacenter and so on; same results.
Just so you know, the reason why I wish to alter the CTCP state is because my Windows 7 laptop is getting an average 8000 kps download speed on my Sprint LTE connection but my Windows 8 laptop is getting an average 2000 kps download speed.  Clearly
SOMETHING is wrong on my Windows 8 box, and I'm theorizing that turning on the congestion provider may fix the issue, unless you have other ideas.