ScottHope:
Cheers Mike.
If you can access your graphics vsync setting, try toggling it. If it's on, turn it off and vice versa.
I'm not fully versed in it's operation but I think it can lead to either frame stutter or frame tearing if the refresh rate of your monitor and the frame output rate of your graphics card are not in synch.
I'm happy to be corrected if this information is wrong.
You are correct about vsync description Scott, but it's not the case. If it was, he would be facing tearing and judder always, even with the avatar not displayed. However, most people say that changing camera and putting off the avatar from the scene, the meter is smooth.