Do your shots miss bad to the left with your right eye closed? I had the exact same problem and unfortunately figured it out at the worst possible moment causing me to miss a monster buck at 12 yards from the ground!! FWIW, I shot targets very accurately RH and still do, but when the adrenaline starts pumping and I get jacked up.....All bets are off!!
I don't know what exactly was going on in my brain but I decided not to fight it. Everyone is different, but for me, one time was enough and I made the switch. Arrow under dominant eye for me from now on and the problem is solved. Shooting better than ever, sight picture is way better and my confidence is way higher now.
Take care,
Jason