Ans. No, we never make changes to the core files of WooCommerce. We always follow the best guidelines which are governed by WooCommerce. WooCommerce Multi-Vendor Marketplace Plugin is coded on top of WooCommerce systems and follows the standard way of WooCommerce application programming. WooCommerce Multi-Vendor Marketplace module is as scalable as your WooCommerce which means it will not affect your existing store performance and will support all your standard WooCommerce cache handlers.
Please do contact us for any further queries or requirements. You can also check our Woocommerce Extensions for additional features.