Too many rows in database

Hi, turns out I had this left on the default setting to save the entries for a year. This created a huge load in the database table, over 600,000 of them, which makes the ‘add to cart’ feature slow as molasses with abandoned cart lite turned on. I’ve tried running crons to empty the table, I’ve deleted all the entries via the settings in Woo, nothing will get rid of these pesky rows. Aside from dropping the table altogether, do you have any advice? Meanwhile potential clients were leaving the site because it was taking too long to add a product to the cart. With this plugin disabled, it is lightning fast. Woo attributes it to the size of the table, which will not empty the usual ways.