Hi there
Thanks for the link to the WP Rocket site… there’s a page cache disabler plug-in that’s accessible from that page, so I’ll play about with and see what the best solution is (javascript magnification off / page cache off).
What’s odd is that it WAS all playing nicely with each other until pretty recently.
And SG Optimizer IS now pretty good – most of my sites are hosted with Siteground and I use it on those – unfortunately the site I’m having issues with is elsewhere, on the client’s own hosting.
Your time/help’s much appreciated!