Released originally in late 2020, version 1.70 (specifically ) was designed for the transition to 64-bit systems and Apple's Metal graphics API.
, was released in late 2020 to ensure the game functions on modern macOS versions that require 64-bit applications. Platform Compatibility : Exclusive to Performance The Sims 3 Patch 1.70 Download
Corrects an issue where DLC icons would not light up correctly in the game launcher. How to Download and Install Patch 1.70 Released originally in late 2020, version 1
Once the patch is installed, you are not done yet. Patch 1.70 resets your graphics settings and disables mods. How to Download and Install Patch 1
If you are trying to update your game, use these verified methods:
Why can I not find the newest patch - The Sims 3 - EA Forums
This update is currently only available for the EA App version of the game on Windows. Essential Performance Mod: "The Smooth Patch"