Hi there! I'm so sorry you had a bad experience playing this game. I do agree that the game jam build is a bit too graphically intensive, mainly due to the fact I didn't have much time to do optimization before the submission was made.
All of the issues you mentioned; difficult AI, collision issues and poor controls should be fixed in the next version of the game which will be released later today at around 6pm BST!
I hope you'll stick around for the full game, in which I'll keep low-end hardware in mind and will do my utmost to make sure anybody and everybody will play it :)
Thank you!