I noticed this version of unity makes games a little heavier(even on the "Very Low" setting) and I made some tweaks that will enhance performance, which I will upload soon. If you want and can, sharing some of your PC specs would be really helpful :)
Thanks for the offer, but I'm not a tech guy at all. If it means anything my comp is really fuckin old. I appreciate how you try to trouble shoot though, for that I must rate your game 5stars.