That should tell you something if it loads without an internet connection, but won't when it's connected.
GT5 is very dependent on the network connection. If your streaming or downloaded torrents, GT5 will be slow forever. Make sure to keep the network traffic to a minimum when playing GT5. That info should almost be stickied.
XEPEGTPTorrents OFF, if you plan on using Lobby/Community services , but it does not affect Seasonals.
georgiebestI'm having problems.
Even with nothing in the house connected to the wireless besides the PS3, it is still slow.
I have high speed internet connection, and I have cleared the cache multiple times.
Don't understand why it happens, it just does.
McClarenDesignWifi is your bottleneck. Go hardwired for best results.
DannyJiggThis.
Plus 'high speed' connections can be overrated. I do not have all the information at hand but if your ISP is doing something weird with the type of data GT5 uses you will have problems. ISPs use traffic shaping to prioritise certain types of data over others, usually giving businesses priority over general browsing. It could be that they are throttling traffic on the port gt5 uses to make web browsing faster.
Tl;dr - could be an issue with your ISP.
It's pretty normal for me to not be able to load at all when connected. Or it takes literally 10 minutes. I don't bother with online much because of it. Even navigating the menus on the home page can take five times longer as normal.
(I am on satellite internet... it's that or dial-up.)