Artifacts

[TekUK]

Just a quick question guys. Does anyone know why I'm getting artifacts over land.
Simply put, I've never had any issue like this ever.
I cant figure out for the life of me what to do to fix this or even reduce the occurrence of it.

Here are some resized images of what I'm seeing

http://imageshack.us/photo/my-images...122700001.jpg/
http://imageshack.us/photo/my-images...22700002s.jpg/
http://imageshack.us/photo/my-images...122700003.jpg/
http://imageshack.us/photo/my-images...010500001.jpg/
http://imageshack.us/photo/my-images...010500002.jpg/

Its making the game completely unplayable. I'm a huge long time fan of the IL2 series and for me this has been the best version yet. But the next day I played, all these artifacts showed there ugly faces

My Rig is
i5 750 stock. Intel-TB to 3.2
4gb DDR3 @ 1333 Ripjaw 12800
Gigabyte HD 6870 1gb GDDR5 Factory OC.
Gigabyte H55M-S2H. Rev 1... Bit of a low end board, but never let me down.
3 HDD's 160 - 320 - & 1TB all 7200's C:/ is 320 and D:/ is the 1TB where games install. 160 is backup.

Running all the latest Drivers for board except for GPU. Have tried the laterst AMD driver but still had same issue. So I went back down to my original driver version, as its more stable and produces more FPS. Well, for me it does anyway. its v 11.8

Running the game on a mixture of high and low at the moment. as It does reduce the occurrence of these artifacts, but not alot anymore.
Each day that passes, They seem to get worse.

Any Help would be massively appreciated.
Thx