I know it's strange, and I can see the reason why you're not sacrificing lumia camera app.

I tried playing with it a couple of times and true it seemed faster than the lumia camera in 8.1 denim. Nonetheless, I cannot wait for hours and hours just to get it back and risk more since I don't have excellent wifi at my home. One thing is also strange, I cannot swap the "Rotation Lock" notification center to any other options. It'd keep getting forced close. Do you have any idea why it happens? The other three are fine, I can swap them all right.