<p dir="auto">In Mac OS X when you paste a minified file like jquery.min.js or bootstrap.min.css Atom crashes or stays unresponsive for a minute or two.</p>
<p dir="auto">May be a known issue, but files with large embedded images such as github's public/enterprise/maintenance.html will often cause Atom to freeze (MacVim actually struggles as well).</p>
<p dir="auto">Seems some of them (github's public/maintenance.html for instance) work fine when in soft wrap mode, or until you move your cursor to the long line when out of soft wrap.</p>