The Gitlab page freezes

The Gitlab page freezes when large job logs is loading.
After a while the error is shown:

Pages do not respond
You can wait for the page to respond or leave it

But if you open something else in Gitlab while waiting of page loading, everything works fine. So we can make the conclusion, that freezes only current page, not all UI.

In Internet Explorer the problem is not reproduced and it works fine.
Im using Gitlab version 12.4.0-ee and Chrome 77.0.3865.120 where the problem is reproducing.