Since different games have different HUD, sometimes I've noticed that it is beneficial, if not necessary to modify the positioning and text to adhere to the game in question. I suggest a game profile system so that multiple preset overlays can exist and be utilized.
I'm a games developer. Since I installed CAM it has caused lots of graphical issues. It seems to destroy any alpha blending and lots of other artifacts appear. I have narrowed down the problem to CAMFPS.
When enabled, it causes the problems as above. When disabled, everything works perfectly. I do not have these issues with other fps overlays such as Dxtory or Fraps.