You can turn this off, at least iTunes 12. Just select the tracks that you don’t want broken apart, hit ⌘I “Song Info”, and check the checkbox “Album is a compilation of songs by various artists”.
Alternatively, as crooked-v mentioned, you can give all the tracks the same Album Artist. In your example, it sounds like “Outkast” should be the Album Artist for the whole album.
Alternatively, as crooked-v mentioned, you can give all the tracks the same Album Artist. In your example, it sounds like “Outkast” should be the Album Artist for the whole album.