Dramatically slows down WordPress and Woocommerce

We used this plugin for the last 3 years and it slowed our website to a crawl. All of our staff were complaining about how painfully slow the Woocommerce admin was with this plugin enabled, and when we disabled it, every single issue that we had on the website disappeared; so after 2 years of use and testing we determined that it was ONLY this plugin causing our slow website. It caused numerous problems over the years and wasted so much of our time that we decided to terminate our entire wholesale program simply because the plugin made our workdays miserable. Everyone who works here had to spend 2-3x longer to do their daily tasks on the website because the plugin was so bloated and caused so many slowdowns. We will now have to start over and find a whole new plugin or simply never again offer wholesale pricing on our website.