I will apologize ahead of time if this issue has been addressed already.
I am running Juicy 3.4 for Sprint. When using the Camera or Video recorder and the surrounding light is dimmed, the phone tries to adjust, the viewer starts to get extremely choppy and records that way. I tried lowering the brightness when this would start to happen and it would improve the fps. While in well lit room it is still slow when the camera adjusts. Runs perfect outside during the day and videos and pictures are perfect.
Thanks for your time.
PS.
Custom ROMS from this site totally saved my phone from chucking at a brick wall.