Actually, those settings are correct while on the desktop or in 2D mode. They will jump up to load settings when you enter a 3D game. With a single monitor, the only way you will see this, is to monitor your CCC while in windowed mode, but realize your card will not use crossfire while in windowed mode.
Your card does this to conserve energy, and keep the heat down while you don't need the full power of your card.
as far as i am aware, CSS is a DX9 only game. Its must just be failing to detect the switch to 3d mode. you could try forcing a load of AA (edge detect 24 samples) in CCC. could force it to bump itself.
welshmouse meant to RESEAT the card. In other words when your systems powered down and make sure you DO NOT have the ac cord plugged into your PSU pull out your 5970, and then put it back in again, making sure that it is a tight fit and all off the cards connectors are making contact with the PCIe slot. Sometimes a card that is loose and making a full connection to your mobo will cause those kinds of issues.
I take it that you are running2 of them in xfire mode then.....it's quite possible that even though you are set up for xfire mode if that is the case, that CSS isnt stressing the first card enough for the 2nd one to kick in. I've noticed this on my 4890 xfire setup...one card will be running and the other loaf depending on the game i am playing. I believe it is the way ATI writes the drivers that the cards do this.
If I am incorrect in this please someone correct me, as I do not want to misinform anyone
But they are two 5870 GPU's, so I'd definately agree with his initial statement more than yours. He's saying it's like two 5870's. It physically is. I guess you are looking at the performance value, even though they aren't 5850 chips on the 5970.