Dr.TCP and Tcp Receive Settings

Hey guys,

I've been doing some tweaking to my PC (WindowsXp SP2)... got rid of malware, used TweakXP to help out with the boot speed (etc) but now I'm trying to speed up internet.

I use a Motorola SB5100 SURFboard Cable Modem (ISP: Amnet / amnet.co.cr)
and do NOT have to use a router/NAT... unfortunately just yesterday I learned that the speed provided is barely 512kbps

I dowloaded Dr.Tcp to help out with the TcpReceive (RWIN) settings to maximize my connection's potential... I tried following http://www.dslreports.com suggestions and lowered the RWIN to 13800, but internet speed drastically decreased... Even though I should be able to set my MTU to 1500, apparently my ISP sets it to 1420...

Do you have any ideas on how to speed up internet? Or at least set the correct values for DrTcp? Thanks for you help!

 

This page states the best setting under regular conditions.

http://www.ezlan.net/Internet_Speed.html

 

I noticed that my biggest problem with internet is that pages timeout... I type a url and 3/5 times ill have to hit the refresh button because the page supposedly started to load but didnt do so fast enough

I noticed that when I used the windows task manager (ctrl+alt+del) in the processes tab to set the priority for firefox.exe to "AboveNormal" pages loaded perfectly.. and didnt have this timeout problem, actually it seemd that pages loaded faster and all... it was great... however, everytime I closed firefox, the priority set back to "Normal"

Is there anyway to set firefox's priority to "AboveNormal" permanently???


PS - I got rid of ALL malware on my PC, and used Dr.Tcp to tweak my Tcp settings in order to optimize internet (ISP advertised speed of 512kbps / actual speed of my connection is 452 kbps (56.5 KB/sec.) / 121 kbps (15.1 KB/sec.)