Holographic 1x reticle is too obtrusive to aim at anything, it takes up way too much space to see what you're shooting at. Even for shotguns they are not precise enough. In Rainbow Six: Siege it's my favorite reticle because it's only about a pixel for the center dot and the surrounding circle is about the same width. In this game, it's practically the size of the entire sight window.
Holographic Reticle too large