The poor performance is something I witnessed first hand after submitting when I sent it to a friend. I made a downloadable build but forgot to put it on the itch page prior to submitting which unfortunately means I'm sure a lot of people were affected by the performance issues.
Thank you for trying the game regardless! I appreciate the feedback and for being honest with the ratings.
I'll try to have the downloadable build up asap post-jam for anyone who's experiencing troublesome performance.