Significant degradation in Edit Mode to update card quantities

In Collections, after importing BT15 and adding 5 single cards (different BT15 cards from newer sets) and entering exit mode to update quantities there was significant delay (approximately 3s) per increment on card.

Only a few days ago I was able to increment card quantity without issue.

 If this is caused by a change to minimize individual database transactions, it might be worth investigating "edit mode" with "save and exit edit mode" that writes all changes from the edit session and refuse to exit "edit mode" on a failed update/write to the database

Hello!

I noticed my update quantity query wasn't super optimized against large datasets, and we were missing an index on the database to boot. Can you try again? 

Great suggestion on the save and exit mode though, I really like that. I might switch it over to that if we notice continued issues with it. 

Definitely an improvement but definitely still a performance difference than when my collection was smaller