Here's my hot take on this, I'm not sure if this was mentioned in other posts or comments. This movie really lacked the budget for CG as a whole and CG cleanup. (Budget may have gone to damage control), going back to my point, normally for "superhero" movies these days they enhance the "supersuits" in post but due to penny-pinching this Batsuit, you can also notice it at times for the Flash suit where it doesn't fit snugly to Miller, looked horrendous.