The red dot, or any illuminated reticule really, has always been fuzzy for me. Not super bad but a 2MOA dot looks more like a fuzzy 4MOA dot to me. Read somewhere that if you put up your rear backup sight, it becomes clear. Tried it and what do you know, the dot is crisp now. I'm not really sure what sort of eye issue this is from (I'm thinking maybe astigmatism) but if you have the same issue, give it a try.
Maybe this is common knowledge, I'm a relatively new shooter, just figured it might help someone out.