64-bit Sims 3 for macOS Questions/Troubleshooting

Thank you @igazor for all your help, I might have to semi retire this one (still good for the sims 2 and many more things), but I am very interested in the sims 3 -64 bit for Mac.
If the scientists find a vaccine for that horrid bug doing its round at the mo.. and the sims 3 upgrade for Mac turns out to be good, I will treat myself to a new Mac (in celebration!) that will handle it properly. In the meantime I will follow developments on both parts. B) while playing The Game on Windows.