I wish there was in Quantrix a shortcut that would select all visible rows similar to alt+; in a traditional spreadsheet. I’ve noticed performance take a hit when deleting large rows of data when they are filtered or sorted; furthermore, the result is rarely what I want as it deletes the hidden rows as well.
Did you try to do the delete-step with “Autocalculate = Off”. I suppose (but not 100% sure) that deleting is step by step process, so it will eventually trigger recalculations and verifications during the delete. This may lead to heavy recursion, explaining what you see.
So to be sure: try to switch off autocalculate, delete, turn it on. Does this help?