Hi exile360 and thanks for your help.
I do use a VPN - a geolocation changing one. I live in Australia so I have dns4me so I can watch US Netflix etc. Been using it for ages with no problems or slow internet/browsers. I also don't use IPv6 - only IPv4.
I reinstalled Malwarebytes and left everything on but got the resolving host issue - on every page - some still eventually loaded while others just crashed or sat there blankly. I tried again with Web Protection OFF but everything was exactly the same - even after restarting the computer/chrome etc. I installed the Browser Guard - with malwarebytes still running and with web protection off it took me so long to even load that page to get it - I would say it took me around 10 - 15 minutes before I was able to get to the page and install the browser guard.
I restarted my computer again - so with Malwarebytes (web protection off) still running and Browser Guard on restarted Chrome - some pages were OK - slow to load with Resolving host on every page - one or 2 pages took forever - one didn't even load at all - it's a fandom.com page - I visit it often but since having the resolving host prob I've had a lot of trouble loading it.
So while that page was still trying to load (blank page, resolving host) I quit Malwarebytes and tried to reload that page and boom - it came up right away. I still have the Browser Guard running for now I'll just have to use that and set Malwarebytes to not autostart and keep checking it every now and then to see if things change in an update.
Thanks again for your patience and assistance. 🥰