I think the difference may be that your newer PC has more RAM (short term, fast access memory, most useful for web use) available than your Mac. You can check the difference. I have an elderly MacBook Air but it copes OK as I had more memory included in the build when I bought it.
Shall we reboot our cartoons thread again? 😁
Another week, another Tory MP sex scandal!
To think that London, or anywhere else for that matter, does not belong to any one demographic