yea this doesnt exactly help. what proof isthere that this button pressing even does ANYTHING? i tried it and i see no difference. i think the "clear game cache" is BS. but that is just my opinion.
i have noticed no difference in the load time when the game boots. as i stated above i think this is BS.
No the clear the cache is not BS. If done right it does work.
The best way is to do it from the dashboard. Go to the dashboard with the disc in the drive.Go to my xbox, press A to boot the game. Immediately press and hold LB + RB + X down until the main menu has loaded.
There are tell tale signs it worked. If you run the game from DVD you will hear more disc activity to start with especially when accessing inventory. Although if you have installed the game you will likely not notice anything.
If you are still not sure it's working then just clear the system cache. This will still clear the game cache but will also delete patches and other system info like friends gamerpics from the cache. But the cache will rebuild itself and patches will redownload when needed.