My problem was resolved earlier but it's returned. I've cleared the cache again as suggested above so it might/should be ok even if just for a while. I'm curious as to why I'm only having the problem here and nowhere else online.
Here's the message I've got again, I've noticed the tech jargon is slightly different this time at the end so wondering if GaGa's techie's can work out what the problem is from that.
A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
Script: https://www.gagajoyjoy.com/stat.../wro/standard.js:362