: Instead of using the Sims3Launcher.exe , launch the game directly using TS3.exe (or TS3W.exe for older versions) to save system resources and prevent launcher-related crashes.

The Sims 3 was made before modern GPUs existed. You likely need to manually add your graphics card to the game's "GraphicsCards.sgr" file so it recognizes your VRAM; otherwise, it will default to "Low" settings regardless of your hardware. 4. Optimize Your Content

: It integrates the "Smooth Patch," which increases the game's internal processing speed (ticks per second), drastically reducing lag in menus and Buy/Build mode.