I have tried all these TCP Optimizers and so, but I do not really understand them so much, so do not know if I did not set anything wrongly.
First, this may be part of the problem. If you have tried more than one TCP tweaking utility, and did not uninstall one before trying another, then this could be a viable reason for your continued decrease in performance.
If two of the similar TCP programs are both installed, and you have made settings to both, they will "Step on eachothers toes" for lack of a better term. It is important that you only use one, and uninstall all other similar programs. The TCP programs mentioned already do practically the same thing, so it is important to choose one, and stick with it. I repeat, get rid of other TCP optimizers besides the one you choose to use.
Here are the instructions you need to follow in order to get help from the forum that specifically deals with Cablenut. I have used this forum in the past, and it was helpful.http://www.broadbandnuts.com/index.php
Here are the instructions, which are located on the Tips and Tricks
page at the above forum.
1. Download CableNut.
2. What type of connection do you have? i.e. 56K, ISDN, DSL (PPPoE or not), Cable etc.
3. Who is your ISP and what is your advertised speed from them? i.e. Cox.net & 4000/512 - this is advertised in kilobits per second. If you don't know your advertised speeds please provide us with a link to your ISPs homepage.
4. What are your current settings now? Do a TCP/IP Analyzer test and copy and paste the results (remember to XXXXX out your IP address) here.
5. What kind of speeds are you getting now? Do 10 speed tests from Speakeasy (choose the location nearest to you) clearing your internet temp files prior to each test, and give us the average of your top 5 tests. This will give you a good baseline to go by but remember speed tests are not 100% accurate.
6. Please tell us your operating system i.e. 95, 98, 98SE, ME, 2K or XP.
I suggest you register if you havn't already, follow the above steps, and see what they suggest. Please do post back here though if you decide to ask them for advice, that way we all know if it worked or not.
Hope this helps,