Having the same problem. Probably had 50-60 seconds added onto my total time this past weekend b/c of my pistol shooting.
Not blaming the pistol, but the shooter. My life does not allow practice right now, so the matches the past 2 months has been my only real, live fire practice.
I need to slow down since I am a beginner, but knowing that and doing that are 2 different things.
I need to get more dry fire and muscle memory developed at home while watching TV.
I am considering swapping out the rear sights. I have the Glock 3 dot night sights, and thinking about swapping out the rear sights so I just have the front dot. I have trouble with the 3 dots. Figure for $6 I can swap out the rears and always put them back in if I want to.