We deal with large hospitals and airports, so it's normal for us to have tens of thousands of components mounted at once - pagination isn't a viable solution for our purposes.

We've had to tap basically every optimization that React apps can do when managing large numbers of elements - however this has been worth it for us:

- We can use the same code to render interactive plans on the client, and to render to print-quality PDFs on the server - We can use the same framework in our UI and plan rendering

The downside is that it's more CPU intensive than alternatives like a WebGL renderer, but for now that's a tradeoff worth making.