Page becomes unresponsive when the json is large

[mulunehde]

I have tried to use it with the json placholder api photos endpoint (https://jsonplaceholder.typicode.com/photos) but the page becomes unresponsive and return errors like this : https://jsonhero.io/j/KtjQydI5I4A3

[ericallam]

This is a known issue, caused by the column view not using virtualization so all cells, even the ones not visible, are rendered. With excessively long lists this takes longer than the 30s Cloudflare Worker timeout.

We'll need to reimplements the column view using something like react-virtual to fix this.