You guys with the key binding issues are really retarded or something? If it says, the key is already bound, say to yourself OK I understand that. Now go to the key that is bound and press ESCAPE. That will delete the binding. Infact, maybe if you just click on every single key binding and press ESCAPE, you can do all of them how you want. I never had any key binding issues with any BF game and don't understand the issue. On my issues, I fixed the sound crackling issue by changing it back to software from hardware sound. Now I gotta figure out the blocky shadows issue which I may try the drivers it came with to fix it. So far it's a great game and will definitely buy.
Face your Fears, Live your Dreams, No Fear -Manny Pacquiao