Hello! I connected with Jorge Davis last week regarding this issue and have finally wrangled the site into a staging environment (as noted above in website).
To recap: we have been debugging the site due to speed issues, and have noted an extreme change in speed with Membership 2 is not activated. Though everything on the site should now be up to date (re: software versions, PHP 7+, etc), we're still experiencing 45-60 s load times in our Wordpress dashboard. Any help is greatly appreciated.