Just chiming in here with my problems:
Console: Refurbished xbox, white with no HDMI and a 20GB HDD
Issue: Random freezing the entire time I've been playing. Freezing coming faster as I make more progress (it seems). Managed to get all the way to the meth lab shootout with Trevor and since that's a longer mission I haven't been able to finish it without it freezing.
Steps taken (that didn't work):
Installing and not installing each disk in every configuration possible with the xbox's built in HDD and an xbox formatted 16GB USB stick (disk 1 on HDD, play off disk two; disk 1 on HDD, disk 2 on USB; both on HDD; both on USB; etc)
1. Delete all GTAV game data.
2. Clear system cache three times.
3. Delete marketplace data from storage system items.
4. Unplug console for three minutes.
5. Install disc 1.
6. Power off, do not insert disc 2.
8. Install disc 2.
What I will try tonight (suggestions from xBox support):
Dean: Press the Guide button, and then select Xbox Home.
Dean: Select settings and then System.
Dean: Select Storage.
Dean: Highlight your storage device (but do not press A to select it).
Dean: Press the following buttons: a.Left bumper
Dean: b .Right bumper
Dean: c.X button
Dean: d.Left bumper
Dean: e.Right bumper
Dean: f.X button
Dean: On the Delete System Update screen, select Yes.
Dean: After your Xbox console restarts, select OK to download and install the system update.
Dean: After the system update is installed, redownload your Xbox LIVE profile and try to sign in to Xbox LIVE
Something I found on this thread just now:
2.) Clear the Game Cache.__
Clearing the Game Cache on the Xbox 360 is a separate function from clearing the System Cache. In order to do so, you must hold the LEFT Bumper, RIGHT Bumper, and the X button all at the same time on the Xbox 360 controller as a game is launching. Once you reach the Main Menu or Title Screen of the game, you can let go of the buttons. There will be no notification to you that this process has completed because it is all done passively.
Clearing the Game Cache resolves many problems in games that rely heavily on the Xbox 360's cached memory. Some of these problems include, but are not limited to NPC issues, random textures, and "hitching", "lagging", or "slow gameplay".
I will come back and update tonight with results.
Nope, none of those methods work. FML.
Anyone else have any bright ideas?