Well not impressed so far,the freezea all over place in chokosing option screens, so I contacted Feral and they pretty much throw the problem back at me.
Before I post the reply all other games that I run have no freeze or graphics issues at all.
Here is their reply.
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From the attached report, I can see that the graphics card is not being recognised correctly. I believe that you are using an ATI Radeon 6870 card, but it is appearing incorrectly in the report as 'ATI Radeon HD 6800 Series'. The card driver appears as 'AMD Radeon Barts XT Prototype OpenGL Engine' which indicates that it is not an official driver for this card.
Please ensure that the card driver is correct for the card - we can only support devices that are installed correctly using officially supported drivers from the manufacturers.
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I'm lost on this and have no idea what to do about it as as far as I am aware there is no official driver for the card - HELP!
I am sorry you have a problem but.... I think before I get into detail we should be clear by your post it appears that
your Mac has a Windows graphics card which has no official Mac support and is using "Prototype" drivers.
OK, I have had a look into this, the graphics card you are using is not (according to the support information you gave us) an officially supported card on the Mac. The Radeon 6870 you have installed appears to be a Windows graphics card installed into a MacPro, as you said yourself the driver has the word "Prototype" in the name which usually means it is far from fully tested and supported.
We test our games against officially released Mac hardware, if you are using none Apple compatible hardware that has been installed into a Pro then we cannot guarantee support. Usually it will work great but we can't guarantee it as the graphic card is not a Mac card.
Our support I think have been clear on the facts, they have stated you need to have officially supported hardware to play the game, I don't think it is unreasonable you need to be using OS X certified hardware to play our games, it's not really feasible for us to test and fully support cards that are not even supported by the manufacturers themselves.
Have you tried the game with Mac hardware including the graphics card? If you are having an issue with the graphics and your card is designed only for Windows and your driver uses the word prototype I think the problem is likely with your unofficial card not the game.
Do you have a supported graphics card to test the game with? It would be good to confirm that this issue is down to the unsupported Windows PC card you have installed.
Based on a few threads
about using Windows cards on the Mac issues like graphics side effects and crashes can happen due to the unofficial and unsupported nature of the card/drivers.
UPDATE: Looking at the unofficial drivers using Google, it appears they have not been updated since they were released over a year ago (by an unknown hacker called Bart), compared to official ones which get improved with every OS update and include many Feral specific bug fixes. This means even if you are running the latest version of OS X on your Mac your graphics drivers will not be updated meaning although your OS is up to date your graphics drivers are frozen in time. That's the problem with using unsupported graphics cards as you miss out on things like official support and driver bug fixes from AMD.
We work closely with AMD, Nvidia and Intel when developing games to make sure the game is fast and stable and any bugs in the drivers are fixed in OS updates. This is the reason people with Apple supported AMD 6000 cards don't have any problems with XCOM and your unofficial card does.