This is a short guide how to run two, or even more, instances of the game at the same time, on a Mac.
- Create a second user account, so you have two
- Enable fast user switching
- Launch the game on both accounts
That’s it. No third party software or similar. Note it downloads the game once for each account, because it stores it in the user folder for each user. Settings for the two accounts are separate so you might need to set up things again.
Why it’s called ‘fast user switching’ is perhaps not obvious. It’s fast relative to traditional shared systems where one person has to log off before another logs on. Fast user switching keeps both accounts logged on, with all apps running. Iit takes several seconds to switch; fast enough for occasional trading maybe.
You need a Mac with lots of RAM to do this, but you need a Mac with lots of RAM to run the game. Quitting other apps before trying it might help. Quitting the launcher as soon as you’ve finished with it definitely helps.