I use WooCommmerce on my site to sell products. WooCommerce was recently updated to version 3.5.0 which enabled on-the-fly image resizing for the products.
This is causing Smush to get worked up and get very resource intensive to an extent that it affects the browseability of the site.
I have escalated this with WooCommerce team and they have also reached out to their developers. I am reaching out to you guys also in order to bring your attention to this.
As of now, I have downgraded the WooCommerce plugin and everything is working fine, but I will not be able to maintain this for a long time.