There was no page 3 at the time I posted the link, so repi apparently just posted that recently. It appears that AMD's extensive social media and forum marketing team did send tweets repi's way to inform him of this very recently, or perhaps he actually saw it here and AMD sent him this way, but he just posted it recently. Again, no page 3 at the time I posted the link. I saw it mentioned at HardOCP and linked it here being curious to see if others experienced the same thing. It's an alpha driver for Mantle after all, so I wasn't sure if it was that or game related.
Thanks for the update though. Apparently the Mantle renderer is rendering things differently, but it is a bug. Which will be fixed. Thanks for keeping us abreast of this news, hopefully it is fixed soon so that those that are able to get the alpha AMD driver working, can get the same graphical level as DX11.