Crash when placing stairs or lowering platforms on macOS 26.3 / Apple M3
Since updating to macOS 26.3 (Build 25D125), the Sims 4 crashes in Build Mode when placing stairs or lowering platforms.
- Regular furniture placement works fine.
- Crashes occur consistently, regardless of cache clearing, graphics settings, or game folder.
- The issue started immediately after the macOS update.
- Before the update, the game ran stable on Ultra settings, including stairs.
Crash Details (Example from Crash Reporter):
- Exception Type: EXC_BAD_ACCESS (SIGSEGV)
- Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000169014000
- Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
- Triggered by Thread: 11
- GPU: Apple M3 macOS Metal driver 0.0.0.0
Already Attempted Solutions (all unsuccessful):
- Cleared all caches
- Repaired game via EA App
- Reduced graphics from Ultra → Low
- Tested windowed mode + V-Sync
- Manually added Apple M3 to GraphicsCards.sgr and adjusted CPU/VRAM limits in GraphicsRules.sgr
