Performance issue with HD5770

[vincik]

Hello, i have really bad fps in this game. I got 4g ram, Ati HD5770 (1G) and Core Quad 2,6Ghz.

I tried to change the video settings in every way possible but no matter what settings i set, i still have cca10fps in some maps. When i set camera to look down on field and no to the horizont i can get even 50 fps no matter what map even on max settings. But when i set camera to look further it drops even to cca10fps even on lowest settings.

I played games from this series and demo of Assault Squad and it runs smooth. Is it just me or somebody else have same experience? What do you think that could be.

PS: i have last ati driver and for example Napoleon Total war runs at almost everythink ultra with no problem stable 35-more fps