Re: still early days
I don't know what he did here. I have the same BRIX platform running SteamOS and I have no graphics issues.
And out of my steam library of nearly 800 games more than 300 run natively on SteamOS. I'm currently play Metro: Last Light.
In my particular setup SteamOS makes a lot of sense. I have a beast of a gaming PC (i7 4970K, 2 X 780 Ti) in a rackmount chassis in the server room. Whatever isn't ported yet (and thats less and less everyday) I can stream at 4K!