问CSS动画性能较差-没有浏览器绘制

EN

.circle {
  position: relative;
  width: 100%;
  padding-top: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.circle::before {
    content: "";
    background-color: black;
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    animation-name: switch;
    animation-iteration-count: infinite;
    animation-timing-function: steps(1);
    animation-duration: 3s;
    animation-delay: inherit;
  }

.rotating-circle {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

.rotating-circle--first-cycle {
    background-color: black;
    animation-name: rotate, toggle-first;
    animation-duration: 3s, 3s;
    animation-iteration-count: infinite, infinite;
    animation-timing-function: linear, steps(1);
    animation-delay: 1800ms;
  }

.rotating-circle--second-cycle {
    opacity: 0;
    animation-name: rotate, toggle-second;
    animation-duration: 3s, 3s;
    animation-iteration-count: infinite, infinite;
    animation-timing-function: linear, steps(1);
    animation-delay: 1800ms;
  }


@keyframes rotate {
  0% {
    transform: rotate3d(0, 1, 0, 0deg);
  }
  50% {
    transform: rotate3d(0, 1, 0, 180deg);
  }
}

@keyframes toggle-first {
  0% {
    opacity: 1;
  }
  25% {
    opacity: 0;
  }
  75% {
    opacity: 1;
  }
}

@keyframes toggle-second {
  0% {
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  75% {
    opacity: 0;
  }
}

@keyframes switch {
  0% {
    transform: translatex(0);
  }
  50% {
    transform: translatex(100%);
  }
  100% {
    transform: translatex(0);
  }
}

<div class="circle" style="background-color: rgb(255, 0, 0); animation-delay: 0ms;">
  <div class="rotating-circle rotating-circle--first-cycle" style="animation-delay: 0ms;">
  </div>
  <div class="rotating-circle rotating-circle--second-cycle" style="background-color: rgb(255, 0, 0); animation-delay: 0ms;">
  </div>
</div>