@CedricDreyer(View Post) There is a fullscreen 'kiosk' mode. Focus is on stability, so new elements are not a priority. Thousands of particles moving around, each with different velocities, temperature and properties means that the CPU has to do *a lot* of calculations. Perhaps when multi-core support is added, it would cut down on any lag, and it seems to lag only when there is a gargantuan amount of particles onscreen.