Agreed. Diffs and MRs in general are terrible. We get 500 errors constantly when submitting MRs, if we can push up at all. And don't try to rebase with the button - OH MY it will just fail. Or it will succeed and the interface will not update. Yuck.

We are switching to GitHub. Which saddens me because I much prefer GitLab's interface. But I have lost the battle, due to GitLab's terrible performance.