low performance on mac

Have you tried doing a clean boot?

To run a Clean Boot on your MAC:
Make sure Auto Login is Off:

• Go to System Preferences in the Apple menu
• Open the Users and Groups panel
• Click the Lock at the bottom corner and enter your password if needed
• Click on Login Options, find Automatic Login, and select Off. Note, this can always be turned back on after the Clean Boot process is complete.

Log-in and complete the following steps to clean boot:

• Go to the Apple menu and Restart
• Once restarted, type your username and password but do not hit enter upon completion.
• Instead hold the Shift key as you click the login button.
• Your user account will load without additional startup-items, or applications. Release Shift once your icons and desktop appear.

After completing these steps on MAC, some less necessary programs and customization options that normally start-up when you log-in will have been disabled.  

What are the specs of your Mac and what version of the Mac OS are you running?

Are you running any other programs when you play? You should close other programs and only play with Origin and Sims 4 running. The other programs could be interfering with TS4.

Do you have mods and CC installed in your game? If you do, they could be causing your game to lag. Especially if you have too many pieces of CC. 

Also you can try reinstalling Origin as that seems to be hanging up many people when playing. Here are instructions on how.

- Make sure you are in Finder then click Go in the menu bar. Hold down Alt and the hidden Library folder will show up. Click on the Library folder.

- You now need to check in the following folders for any Origin files and folders:

Application Support (Origin)

Caches (Origin, com.ea.Origin)

Preferences (com.ea.Origin.plist)

Saved Application state (com.ea.Origin.savedState)

Open a Finder window and click on your Macintosh HD in the left hand section under Devices (if it's not there click on Finder in the menu bar then Preferences. Select the Sidebar tab and make sure Hard Disks is ticked under Devices), open Library, then delete the Origin folder.

After you've trashed them, empty the trash then restart your Mac. Then redownload and reinstall Origin.

Also try repairing your permissions. You can find this:

Open Disk Utility and Repair Permissions - Applications > Utilities > Disk Utility

Just trying to think of all the reasons it could be lagging.

You should be able to go into Options on the game and play in "Windowed" mode. Is this grayed out for you?

I can't take a screen shot, but it should be the "..." on your game menu. That is the Options menu at least in the English version. When you go into that, you should have the option to play either in Windowed mode or Fullscreen mode. Sorry, I don't know Russian so I'm only going by my game. The screenshots I took do not show the menu. Sorry.