The "Low" graphics is the lowest but still enjoyable graphics in the game. I already tried doing your request by testing the lowest graphics possible, but it's really weird (especially the lighting) and not enjoyable, + you can barely see. The game lags may caused by my poor optimization skill, and I'm still learning how to be good at it. Sorry for this bud!
Also the Update #3 may be the last update for this game, because I'm really busy with school projects and I will spend my spare time for my next game. Thank you for understanding.