This is offered in a constructive manner, so take no offense:
You apparently don't understand how to use a peep sight. I've been using them for well over 50 years now.
Basically, the proper use of a peep sight means
ignoring the rear sight.
DON'T look at it- look THROUGH it.
Instead of having three things to focus on (Rear st, front st, target), you now have only two- front sight and target.
Your eye will naturally seek the center of the aperture because the light is brighter there. Your eye does not need your help to do that-
just learn to let it happen.
{edited to add}>>>Since the center of the peep is the brightest, your eye will want to center the front sight and the target in the aperture. {end edit}
Eventually, you'll find your eye is alternating between focusing on the front sight and the target.
It becomes a fast AND accurate way to shoot. I'll be aiming my second shot while another shooter is trying to get the front sight into the notch.
{also edited to add}>>>
Over the years, I've encountered a few people trying to use the aperture like a rear notch. That is, they want to use the bottom of the aperture as if it is a wide U shaped notch, pulling the front sight down to the bottom, along with the target.
BIG MISTAKE!
THAT is very fatiguing, and eliminates all the speed and easy-on-the-eyes advantages of the peep sight.
Hope this helps.