I was at the range with mine , HX green dot , and the dot is so small and the illumination doesn't work during the day . Not sure if I'm doing something wrong , but I'm not liking this reticule . Hard to see the dot or the crosshairs .
I have the MRAD center dot reticle and found the same as you. Spent a little time at the range focusing the reticle and it is much better. I have to admit that I am not a fan of center dots, would much prefer that same reticle with a crosshair.
Definitely play with the diopter. The ret is very crisp and visible, IMO.