@agb58 creating and editing pages is fine here. No issues with that.
I think your assumption is correct regarding the loading of the “Search Appearance” tab. Because, when I’m trying to load that particular tab, the memory and CPU usage of my VPS is going to full. That means it’s doing some queries for every post in wp_posts and wp_postmeta table.
Same issue here. I think this is related to the large number of posts. Not the migration issue. My website with 500k+ post is experiencing the same issue.
Whenever trying to load the search appearance page, the processor and ram usage going to very high and after a couple of minutes, it’s getting timeout.
Error 500 is solved and the website is accessible now. Please look at the issue again.
Thanks