After installing 10.11 version 2, the game seems definitely smoother technically. However, the textures are horrendous. They seemed to have dropped in quality from the previous driver I was using.

How can I get full resolution textures at all times?

I use a 5970 2gb //i7-2600k, so I definitely have the power...

heres a little post about making a config file

http://www.geforce.com/News/articles/how-to-unlock-rages-high-resolution-textures-with-a-few-simple-tweaks

are you referring to ATi catalyst 10.11 or 11.10?

To set high res textures you need to follows this link. Did wonders for me!

http://www.gamesas.com/index.php?/topic/1236250-rage-support/

Go down to the 4 post and follow the instructions.