title: React app suddenly is using more than 1 GB of RAM on Chrome
body: <p>I've been working on an app I'm building, and until now it's had a reasonably small footprint. Today, however, I was looking into why my computer was suddenly running slowly, and I can see the app in Chrome is occupying around 1.2&nbsp;GB of RAM!</p>
  
  <p>Looking through my commits, I can't really spot anything suspicious. Where should I look when trying to debug enormous memory usage? I'd post code examples, but I can't see anything relevant, really.</p>