Pull request page become so slow when pr is big

[namse]

My company used to make a big PR for major update. It's very difficult to review or check comment with code in Pull request page because it become too laggy to review in page.

I hope it become optimized.

[robotocryptogame]

Same problem here. Is horrible. this should be high priority

[GoodPie]

I've been using the Github Pull Requests extension to get around this at the moment. With a relatively large feature pull request (~50 files touched), starting a comment causes the whole page to become unresponsive. With the extension, it seems to be a lot smoother.

[james-arawhanui]

Same here on Chrome. Switching to Firefox it becomes no issue.