WooCommerce Bot Traffic Mitigation

I hope someone can help me. Recently we have a serious problem with anomalous traffic spike to woocommerce pages. These spikes cause often severe server CPU overloads and other problems. We already done everything we know to stop this traffic (bot we think): set wordfence to limit them, insert rules into robot.txt and .htaccess. We have also a specific protection on our hosting on Aruba. The only thing that has changed is the way the bots are hitting the site: initially, the visits were all directed to cart and to filters. Later, they shifted to URLs for the translated version of the site (/en/). We tried deactivating the translation plugin we use (Transposh), and while there are still a large number of visits to the translated site, there are now also many visits to the main shop page, as well as to product tag and category URLs. We really don’t know what to do.