I messed with my settings in ATI CCC and so far not seeing it any more...at least for now...
This still lets me run at 60hz refresh and frames...**the Mipmap setting (3) carved into my frame rates and dropped them to 50 so I backed that off...the Mipmap thing seems to effect how distant textures are blended...
Here are my settings:
AA - Narrow Tent 4x (the edge detect thing had a huge frame hit...went with narrow tent)
AF - 8x
Catalyst AI - disabled
Mipmap - (setting 2) Performance**
Wait for vertical refresh - Off, unless application specifies
AAMode - Adaptive Multi Sample AA
OpenGL Triple Buff - disabled
In game settings are basically all maxed out with the exception that textures are 1024 and I leave building shadows disabled
So far so good...and I am not seeing the cloud tearing or or jagged edges either...