If it is the former, there is no way. After all, everyone has some defects, but since you can recite them, don't worry too much. You just need to spend more time making up for them. I think you may be better in other ways. God wouldn't treat a person so badly. You need to find out for yourself. And now there are some trainings that can develop people's intelligence, which may be expensive and immature. I think it will be better in the future. And I really don't think this is a big flaw. You really shouldn't care too much.
If it is the latter, you can still make up for the slowness of reciting because of inattention, because I have tried. I have to recite it for a long time when I think about other things, but when I devote myself to endorsement, I often remember it better and recite it faster. The mechanical method is to plug your ears or read aloud, and bring the sound into your mind to make you more impressed. Also, you can keep reading and watch it several times. This is a more mechanical method. Then the best way is to sharpen your knife first, that is, to concentrate first. Now you should also have attention training. If you are often absent-minded and serious, you can do this training. If it is only once in a while, you should put other things aside before each endorsement. In short, according to your own actual situation, my opinion is for reference only.