Default [Q] Camera not working [L3]

Camera app itself works fine. But it lags too much and I can't make any videos. I downloaded snapchat qnd tried it out, but the camera immediately stops working and I can't take pictures. I don't know where to download any camera fixes. I'm using cm9.

Any help here is welcome.
Thanks

PS: I think, that the problem is caused by the custom ROM I've installed.

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