Okay, then we will tell everyone to run the ideal settings.
@
Siggers posted a massive list of ideal settings. When he switched all of his settings over, his connection was significantly improved.
There are two ports which GT6 uses. We'll need to forward those two ports (although I can't remember which ones they are) and run with uPnP disabled. Everyone who is capable of DMZ'ing their PS3, I still strongly recommend it.
For everyone who can, shut your PCs down, and turn the wi-fi radio on your cellular/mobile devices off.
If you have an Xbox One, throw it out the window.
Give your PS3's internet priority. We'll do our best to make these races flow smoothly.