Tweaking Group Policy
Open the Local Group Policy Editor by typing "gpedit.msc" into the Start menu search.
Open the "Computer Configuration," "Administrative Templates," and "Network" folders, then select the "QoS Packet Scheduler" item.
Right-click the "Limit Reserved Bandwidth" option, selecting "Properties" from the context menu. Enable the limit, then change the limit amount to 0 in order to disable any reserves. Reboot Windows 7/XP to let the change take effect.
Edit the Registry Type "regedit" in Run and Hit Enter
Navigate to "HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Internet Settings" in your registry editor
Change "MaxConnectionsPer1_0Server” and “MaxConnectionsPerServer" to 10 or greater.
Restart your browser for the change to take effect.
Also try using/changing to Open DNS IP's(Google Search for these ip's)