Anti-aliasing + OpenGL is messing up games.

[Renato84]

I'm having issues in the latest releases that I didn't have before.
In Metroid Prime 3, some computers can't be scanned. In Wii Sports Resort and Wii Music, eyes are missing from Miis.
I've found out the culprit is Anti-aliasing (both MSAA and SSAA) + OpenGL.
What's causing it?