https://www.zen-cart.com/content.php...eed-up-my-site
. In Admin->Configuration->Attribute Settings, there are a few switches which, if turned off, will reduce the number of queries used to calculate and display product information:
- Enable Downloads -- If you're not doing downloads on your site, turn this off.
- Enable Price Factor -- If you're not using price-by-attributes support, turn this off to stop those calculations and the related queries
- Enable Qty Price Discount -- If you're not doing quantity discounts, turn this off
- Enable Attribute Images -- If you're not adding images to your attributes, turn this off
I understand it won't be possible to make it have no impact when attribute images are being used.

Regards,
James