miladj3

function slowmo(rate = 10) {
  window._raf = window.requestAnimationFrame
  window.requestAnimationFrame = f => window._raf(t => f(t/rate))
  Date._now = Date.now
  Date.now = () => Date._now() / rate
  performance._now = performance.now
  performance.now = () => performance._now()/rate
}

slowmo()