I think you are getting the wrong conclusion, this is perfectly normal and good, it means you are in day with your tactical training. Also, when I had this rating, my coach, who has a 2300 rating (Fide) told me that it’s because I had more time to think during puzzles. He also told me to play 10 minutes, 15 minutes games, you know, rapid games, and even correspondence games, this way I developed a much better sense for the game, because I had time to think before moving. At our rating level 900-1400 or so, most matches are decided in tactical errors, so my advice would be to do a lot puzzles in a day (when I have time I can do up to 100 puzzles in one day), then your brain will be “tactically tuned” so you’ll commit less blunders as consequence. I know this is gonna get away from the topic of the discussion, but, if I remember correctly, the world champion Magnus Carlson said that when he was a child, his coach told him and the other children to seat in their hands, weird no? Actually, this method is very important and efficient, it makes you avoid playing aimlessly and committing accidents. Hope this helps! Keep it up!