The first thing you need to do to improve your golf swing is understand what it is you are doing wrong. This will help you to focus on the problem and understand why this problem is occurring. Then at least you will be able to figure out a plan to get it right.
The first thing you may need to do is shorten the swing and see if the results change. You may for example lack confidence in executing the shot and as a result be thinking too much throughout the swing with r11 irons. This thinking of course would not be positive and consequently affect your swing as a whole.
Confidence is critical and it is brought about when you feel that you can get the job done. When you fear the outcome, inevitably your confidence is affected. So if you identify the problem and address it, your confidence will improve in terms of execution.
Also as you shorten the swing you will be able to focus on the club face taking the club straight back to your hips and then hit the ball square on the down swing with taylormade r11 irons. This will build good muscle memory and on top of that it will bring some rhythm into your swing.
Additionally you will focus on grip and posture and all of the above will result in better balance and get you going with a nice even tempo.