If you’re not using the Quantity Price Discount feature in Zen Cart, setting Enable Qty Price Discount to False will stop unnecessary calculations and related queries and therefore speed up the rendering of your store’s product pages.
To disable quantity price discount in Zen Cart:
- Log in to your Zen Cart store Admin
- From the Configuration menu, select Attribute Settings
- Select Enable Qty Price Discount and then click the Edit button.
- Select False and then click the Update button.