While Rockstar doesn't recommend installing the second "Play" disc for GTA 5 on your Xbox 360 hard drive, the fine folks at Digital Foundry have found a workaround. Installing the disc to the hard drive presents texture and frame rate issues, but installing that disc to a USB flash drive produces much more favorable results.
Digital Foundry warns mileage may vary depending on the flash drive you use, and it's definitely suggested you go with a 16GB stick over an 8GB model if possible. As you can see in the video above, the USB install clears a lot of the texture pop-in that comes from streaming off the Xbox 360 disc alone.
Grand Theft Auto 5 officially launched today on the PS3 and Xbox 360. In our review, we cited complaints with the story's focus on deplorable characters, but found the sandbox to be the best Rockstar has ever created.