Some people shoot better instinctively, as taught by Fred Asbell, which includes the founder of TradGang, Terry Green. Some people shoot better using a conscious aiming method, like Rod Jenkins. It is possible to both shoot targets and also hunt well, like Rick Welch, although the great Howard Hill recommending choosing one or the other. Howard himself could shoot well in just about any venue he chose, but he realized that the environment and demands of hunting were different from target shooting, and the average person would do better if he focused on one or the other. Not that hunters should swear off shooting targets, but that they shouldn’t worry too much about the score, and would be better off shooting targets one shot at a time with their hunting equipment.
Another big difference between target shooting and hunting, which I think may be helpful for you to understand, are the different mental processes required in each.
Target shooting is a mechanical process where the shot can be timed to suit the archer. It is well suited to a calculated approach, like gap shooting. There is a small period of time, starting when the archer has attained the sight picture he wants until the conclusion of the shot, when it is better if the target archer stops thinking and focuses all of his attention on the spot he wants to hit. Up to this point, the target archer’s mind is actively thinking about gaps and many other things. If anything goes wrong, he lets down the shot and starts all over again.
Hunting requires constant awareness of an ever changing situation, and when the shot process starts, it should continue to conclusion without much mental input from the shooter. The shooter’s attention should be focused outwardly toward the game animal and the environment, and not inwardly on the mechanics of his shot process. He’s more like a player in a baseball game, where he has to respond to events around him and can’t stop the action whenever he wants to. Both target shooting and hunting require suspension of cognitive thoughts at the appropriate moment, but that moment is longer in hunting than in target archery. This article on thinking in baseball expresses it better than I can:
https://www.nytimes.com/2017/03/31/opinion/how-to-throw-a-baseball.html?_r=0It seems to me that your problem with hunting is that you’re overthinking things. You might be able to get back your old hunting accuracy without throwing the new skills you’ve learned out the window if you learn to stop cognitively thinking at the appropriate time in your shot process, and switch your mind over to the same situational awareness that you probably used to have when you were more successful.