When I upgraded my FiOS plan I had the same problem and went through all this MTU stuff, too, just to find out that the solution is much simpler: the ONT needs to be rebooted after your upgrade to detect the new speeds. Just call Verizon and ask them to reboot your ONT.
I beleive that the tech who came out did reboot the ONT, as he was able to obtain the higher speeds on his netbook - but I will cal and ask to confirm - thanks!
Test your speed wired ethernet, with the wireless disconnected.
Use IE and make sure your Windows machine has ALL the windows security and driver updates 1st. Make sure you have the latest version of java.
Must log into PC as admin user, and run IE as an admistrator(rightclick on IE shortcut run as admin). Then, run the optimizer:
http://verizon.net/optimizesettings/
Reboot PC after optimizing and post your speedtest result from:
speedtest.verizon.net
Test with a borrowed PC from friend/neighbor wired also.
Since field techs PC was faster than yours, the issue is YOUR PC.
Start a new topic or ask questions in the open forum.
