Hi
Just to add to this, but you’re mistaken with the fact that this is to do with the latest version of Woocommerce.
We were experiencing similar issues on the last version of woocommerce with BOTH the new version of SG Optimiser and the previous version. In fact, things have only gotten worse with the new one when working with Woocommerce – including sending upwards of 60 emails when trying to issue a refund throught Stripe.
Siteground, why have you released a plugin that isn’t fit for purpose? Its no good saying its a bit difficult to resolve the issue but then leaving the plugin open for anyone to install, at the very least, pull the Memcache feature or TELL US NOT TO USE IT ON WOOCOMMERCE!
