Camera Rotation Laggy

So I’m trying to make a puzzle game in blender with mechanics similar to Pneuma: Breath of Life and a visual style similar to Necropolis. Everything is going great, except whenever I enter the Standalone Player, the way the camera turns is very laggy. This is not an issue with FPS, as animations and the linear movement of the character are unaffected. The only thing that’s having lag issues is the camera and how it rotates around to look at objects. Could somebody help me understand what’s wrong?

There is a problem with mouse position in Stand alone player. I don’t quite now what it is, but there is a work around.

If you’re building a mouse look script you need to check if the mouse has moved:

if bge.logic.mouse.position != (0.5, 0.5) or bge.logic.mouse.position != self.last_position:
             bge.logic.mouse.position = (0.5, 0.5)

self.last_position = bge.logic.mouse.position

Then set it back to the center of the screen.
In any case I think the problem has been sorted out in blender 2.78, so you should download the latest version if you haven’t already.

I’ll try that, although Blender is up to date for me.