Started timing myself on easy LeetCode problems and realized speed was my actual gap, not knowledge

Could solve easy problems correctly basically every time, untimed. Set a five minute timer out of curiosity and missed it on problems I 'knew' cold, just from second-guessing and re-deriving things I should've had automatic. Been drilling speed on easies for two weeks now instead of chasing harder problems, and mediums feel noticeably calmer as a result.