I have a 2013 Retina 13 running High Sierra. Yesterday I upgraded to Safari 12.1. The description sounded like a minor update, so I just went ahead and did it. It has ruined Safari. Safari is now crashing constantly without any warning, multiple times per hour. I'm very lucky if I can get 15 minutes straight of browsing without a crash. Is there any way I can downgrade Safari to the previous version? (12.0.whatever) I have a backup drive but my last backup was weeks ago, so if I revert to that I will either lose a bunch of stuff or have to try to manually copy things over. Is there any way to just revert Safari and avoid having to do that?