@igazor I do try to check on RAM as I go, although sometimes I lose track of time. All in all that seems ok. It is also true that the more I do CAS, the more the game seems to crash.
I will say I have no idea what you mean by arranging for vertical sync and capping frame rates, so it would be helpful if you would explain that to me please! My technical abilities only go so far.
A good few years ago I downloaded bootcamp on my old Mac, and before that I added extra RAM to my computer. I found that I hadn’t allocated enough space to the bootcamp drive, and it was all a bit of a mess for me to do myself at the time. I have now bought this desktop which is a lot easier for me, and use my new Mac for general work things - as Macs most certainly weren’t built for gaming.
Thank you for taking the time to help me!