I've always had issues with light through a narrow peep or centering the pin in a wide peep. It tends to make me want to shoot at the "chest" instead of a well defined point on a deer. I think this is because your eye can only focus on one focal distance at a time, so it switches back and forth where the target is clear and the pin fuzzy to the pin clear and the target fuzzy.
For me, the answer was a red dot sight on an adjustable bracket. I can't recall the brand right now, but it worked very well for me for many years of compound hunting. I hunt eastern whitetails, so distances are short, 20-30 yards from a treestand. Since drawing a bow in the presence of game is already quite a bit of movement, I kept the bracket adjusted for 20 yards. This allows for quick shots if needed when a deer surprises me approaching from behind. For 25, yards I'd just hold a couple inches high. For 30 yards, I have time to adjust the bracket in most cases to 30 yards.
I found several advantages. Since you keep both eyes open and just look at the deer and the dot is superimposed in your vision path, the dot appears in the same focal plane as the deer, so picking a particular spot was much easier. No peep sight is needed, so seeing a pin in low light is not an issue. My red dot is adjustable so I can turn it down for low light and adjust as needed during the day. If you come to full draw and you can't see the dot, it is obvious that you rare torqueing the bow or don't have proper head alignment.
The biggest disadvantage is setup. You don't use the normal dot adjustments like you do with a firearm. You have to adjust the relative position of the red dot in the bracket. There are instructions for this that are not difficult to follow, but I found slight adjustments in nut pressure changes sighting. So, you can't just get it where you want it and then lock it down because the lock down changes the sighting. Instead, you have to make and adjustment and lock it down and then see where you are. This means fine tuning take a lot of time and trial and error to get it just right.
However, once setup for your specific shooting style, rest, arrows and such, sit is a great setup. A second (not for me) is record book acceptance. While this setup is perfectly legal in my state, you need to check regulations and some record books won't accept deer taken with it (at leas not back when I was using it).
I haven't used this setup for hunting in a number of years. With my shoulder issues and arthritis, I've moved from a compound to a crossbow.
I'm not sure if this setup fits with your situation, but it is an option to consider that hasn't already been discussed.