No worries, I revert to 5.13 and that fixed it.
I kicked the memory up in the php.ini, wp-config.php and .htaccess file to 1024mb.
That did the trick. But the variations don’t show up. It’s like they uploaded and vanished.
Did you ever solve this? We have products with 1000+ variations and the store is useless. Long load times on the back end and 10 seconds on the front end per product.