Without downloading the exe (work laptop right now, can try later), have you followed the optimization suggestions in KAPLAY's guides? https://kaplayjs.com/doc

Without downloading the exe (work laptop right now, can try later), have you followed the optimization suggestions in KAPLAY's guides? https://kaplayjs.com/docs/guides/optimization/ https://kaplayjs.com/docs/guides/optimization/ Assuming it's capable of running in your browser, I'd suggest using chrome's dev profiling tools to help with finding the optimization areas. Based on feedback from everyone else, sounds like something is not cleaning up as the game keeps running.