I should also add that not all sites respond slowly.
Streaming video seems to work fine from most sites and downloads are ok.
But the ISP’s slow response is what is really causing the problem. Even ‘tech support’ from Frontier is useless.
They have the same ‘canned’ solution of removing power from the modem, waiting 30 seconds and reconnecting.
Sometimes it helps. Most times is doesn’t.. And it’s a new modem.
Have you tried running CC cleaner or Advance System Care?
http://www.piriform.com/ccleaner
CC clearner is free, but Advance Sytem Care cost about $20 a year. Well worth it IMHO.
http://www.iobit.com/advancedsystemcareper.html