I am still confused. Are you sure that article isn't "old"? I mean, that's what people thought initially, that the uninstalled game performed better than when you installed it on the Xbox 360 hard drive.Ah, here's an article that's clearer regarding the 360 texture issues: http://www.gamersmint.com/xbox-360-version-skyrim-has-texture-loading-issues
Weird........ So the installation is worse. Maybe they haven't optimized at all for HDD install (ala Halo 3) i.e. the game normally accesses the disc and HDD cache, but installed, it's trying to access both spots, which are now on the HDD-only. (Come on Beth, it's 2011 ffs )
Sorry about the confusion.
http://www.gamefaqs.com/boards/615803-the-elder-scrolls-v-skyrim/60910056?page=13
But, judging from this video, it turns out to be the opposite.
Maybe it's just that there is a rendering bug on the Xbox 360 whether you install the game to the hard drive or not.