So I have been really happy with my nightforce and the NPR2 illuminated recticle, but I have noticed very recently that with the 1/2 diopter change in my contact lens prescription, I am having a very hard time seeing the crosshairs, even on full illumination.  While my vision is better, I almost seem to be having an increasing parallax problem that the adjustment knob can't rectify.  

Has anyone else had this, and if so, did it improve with time or stay the same?