firewalls do not cause a delay
antivirus may do so if it is automatically checking everything that is downloaded from the net to your computer (check your antivirus to see if this is enabled)
I turn this active web filtering off when I'm trading (this is the only thing that I can think of that would cause a slow down in data feed)
antivirus may do so if it is automatically checking everything that is downloaded from the net to your computer (check your antivirus to see if this is enabled)
I turn this active web filtering off when I'm trading (this is the only thing that I can think of that would cause a slow down in data feed)