Reloading DFW and GSX did nothing for the stutters... I did however lower the texture res to 30 cm and it has smoothed out substantially.. Is this the fix?
It's not "the fix", because there's nothing to fix in GSX, and nothing in GSX that could be affected specifically by the texture resolution, since that slider ONLY controls the photorealistic terrain resolution and GSX has none, and DFW uses a different method to create photoreal textures which is not affected by that slider.
But if, due to other large photorealistic sceneries in the area you have installed, which are exhausting your video ram, your system has become overloaded, than yes, such fix would help in your case, not because it's anything related to GSX or DFW, by simply because if your resources are taken from something else, there's not much processing power available for DFW and GSX, which DO use your video card resources quite a bit, so you must be careful not to overdue with other settings.