terrain texture issue

[Nitneuc]

Hi guys,
This small pic shows everything :


This is what I get when I set the Terrain quality higher than low (the dark things aren't static, they move on other places when I move the mouse). I can set every other settings on high but for some reason I have to stay on low for terrain quality to avoid that.

ATI HD4870 1Go (I have the latest catalyst drivers)
i7 920
Asus P6T
3x2Gb DDR3
(My new rig, my former computer with the 8800GT used to run the game fine )

Computer has not any problem on GTA4 or Empire total war, temperatures are Ok.
I bet it has something to do with the catalyst settings but I don't know what to change (I already tried to change the mipmap on every possibility but it didn't work).

Thanks for your help.

[SnipingCoward]

switch off anti aliasing in ccc

i remember a thread with a similar screen shot in this forum... don't know where it is or what the solution was, but you should try looking for it

you could/should also try to revert your drivers to a more "stable" one... maybe someone can call a version which works for sure?!

[Nitneuc]

Ok I solved the problem by trying different settings in the catalyst center, you just have to enable the Catalyst A.I. and everythings run fine.
I hope that'll help if someone got the same issue.