I'm not seeing why the DOM would necessarily makes rendering slower. See e.g. this comparison showing react web being faster and more energy efficient than react-native. https://ionicframework.com/blog/ionic-vs-react-native-perfor... It's true that pathological DOM dynamism might incur some cache/layout invalidations, however if that were to be an issue (which is very rare and profiling is easy), you could mostly eliminate the problem with a few lines of https://developer.mozilla.org/en-US/docs/Web/CSS/contain