In general I have no problems with my router but when I try to use webmail services there are a variety of issues ranging from the pages not loading, loading exceeding slowly, messages not sending. Are there any settings that can be used to address these issues? The problems occur regardless of whether I use a Mac or PC and are resolved if I connect directly from my computer to the modem. It only seems to impact content heavy websites such as webmail or Comcast's help page.
Router: WZR2-G300N
Firmware: 1.00_1.26
ISP: Comcast