Honestly I would not expect the problem to be fixed after tonights "maintenance". Typically all they do on a maintenance cycle is to fiddle with the servers. NO PATCHES! ....
Show me I am wrong Zenimax!
Patch notes https://forums.elderscrollsonline.com/en/discussion/453058/pc-mac-patch-notes-v4-2-12#latest say that this patch addresses Mac client crashing.
I was able to do crafting writs on 13 characters and do all of the surveys I'd gotten without a crash, then just after I ported back to Alinor I crashed. Yesterday that would have been 3 or 4 crashes so it's not as bad but still unacceptable. The game still stuttered at times and I had several sudden fps drops that lasted a few seconds then went back to normal. So far I can say that they've made progress, but it's not fixed.