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chromium/third_party/blink/web_tests/compositing/massive-scale-interest-rect.html 

<!doctype HTML>
<style>
.container {
    height: 1080px;
    width: 1920px;
    transform: scale(0.0859375);
    transform-origin: 0 0 0;
    background:blue;
}
.wrapper {
    height: 92px;
    width: 165px;
    overflow: hidden;
}
.posabs {
    position: absolute;
    width: 300px;
    height: 300px;
    top: 5000px;
}
</style>
<div class="wrapper">
    <div id=target class="container">
        <div class="posabs" ></div>
        <div style="will-change: transform" class="posabs"></div>
    </div>
</div>