I am glad you had fun. The sluggishness was intentional to make it feel more chunky. I do fear that your experience will be typical for the average person who tries the game. Each level is designed to be only 1 to 2 minutes long, but to learn them well and complete the challenges takes a lot of runs on each level to get a feel for them and I don't really expect most players to invest that much time.
Ultimately I am super happy with how it turned out, but next time I enter a jam I intend to focus more on a gameplay experience that can be optimally experienced in a much shorter amount of time lol