In some of the maps, particularly the ones where you can see a long way with a lot of detail inbetween, my game crawls to about 10 FPS at best. What setting should i change so that i can still play even when looking at a lot of details?
It was so bad that i had to play some of the maps by not going in certain areas or looking at certain places, and one of the snow maps was so bad that i literally couldnt look anywhere.
Depends on your PC (sorry - stating the bleeding obvious). Knock off the HDR/Bloom for a start. In the config, before playing with the custom settings, just knock the thing down to its lowest setting and work up from there.
No doubt there will be long threads going on our forums on the subject of tuning/tweaking shortly!