Improve Steam Game Performance on Mac: 10 Fixes

If your Mac struggles to run Steam games smoothly, this guide walks through practical fixes to boost frame rates, reduce stutters, and cut loading times. You’ll adjust settings in Steam, macOS, and the games themselves—no hardware changes required.

What You’ll Need

• Steam client installed and logged in
• Administrator access to your Mac (for some system settings)
• About 10–20 minutes of time
• An internet connection for verifying game files or updating drivers

Step-by-Step

1. Enable Steam’s built-in performance settings. Open Steam, go to Steam → Settings → In-Game. Enable Enable Steam Overlay while in-game (or disable it if you don’t need it—it can cause stutters). Also set In-game FPS counter to a corner so you can monitor performance. Under Steam → Settings → Downloads, make sure Limit bandwidth to is not set to a low value; cap it at 100 Mbps or higher to avoid network bottlenecks during downloads.
2. Close background apps. Quit any unnecessary applications, especially browsers, video editors, or other games. Use Activity Monitor (in Applications/Utilities) to see CPU and memory usage. Look for processes like Google Chrome, Spotify, or Dropbox and quit them if they’re not needed.
3. Update macOS and graphics drivers. Go to System Settings → General → Software Update and install any pending updates. macOS updates often include improved GPU drivers for both Intel and Apple silicon Macs.
4. Check game-specific graphics settings. Launch the game and open its video/display settings. Lower the resolution (e.g., from 2560×1600 to 1920×1200), reduce shadow quality, anti-aliasing, and texture quality. Disable motion blur and depth of field if present. Start with the game’s “Low� or “Performance� preset and gradually increase until you find a balance.
5. Verify game files. In Steam, right-click the game in your library, select Properties → Installed Files → Verify integrity of game files. This fixes corrupted files that can cause stutters or crashes.
6. Adjust Power settings (MacBooks only). On a MacBook, go to System Settings → Battery and ensure Low Power Mode is turned off while gaming. Also, keep the charger plugged in—macOS often reduces performance on battery to save power.
7. Use “High Performance� graphics mode (if available). On Macs with both integrated and discrete GPUs (older Intel models), go to System Settings → Battery → Options and set Graphics switching to Better performance. On Apple silicon, the system automatically switches to the high-performance GPU when needed.
8. Clear Steam cache. Go to Steam → Settings → Downloads and click Clear Download Cache. This can fix slow loading and glitches. You’ll need to log in again after clearing.
9. Optimize game launch options. Right-click the game in your library, select Properties → General → Launch Options. For some games, adding -high (sets high process priority) or -nojoy (disables joystick support) can help. Research the specific game’s recommended launch options—don’t guess.
10. Consider using “Game Mode� (macOS Sonoma and later). In macOS Sonoma (14.0) and later, there’s a built-in Game Mode that automatically prioritizes CPU and GPU resources for games. It’s enabled by default when a game is in fullscreen. Ensure you’re playing in fullscreen (not windowed) to trigger it.

Common Mistakes

• Ignoring the Mac’s thermal state. Macs throttle performance when they get hot. If your Mac is hot to the touch, performance will drop. Ensure proper ventilation—don’t game on a bed or pillow.
• Setting every game to “Ultraâ€� settings. Even high-end Macs can struggle with maxed settings. Start lower and work up.
• Running games in windowed mode. Windowed mode can reduce performance due to compositing. Use fullscreen or borderless fullscreen if the game supports it.
• Forgetting to update the game. Developers often release performance patches. Keep games updated via Steam’s auto-update feature.
• Overlooking external display issues. If you’re using an external monitor, ensure it’s connected directly to the Mac (not through a USB hub) and that its refresh rate is set correctly in System Settings → Displays.

Tips

• Use Steam’s built-in FPS counter (Step 1) to see if your changes actually improve performance.
• Close the Steam client itself while playing heavy games—it uses RAM and CPU. You can still play games without the client running (though achievements may not sync until you relaunch).
• Keep your Mac’s storage from being full. macOS needs free space for virtual memory. Aim for at least 10% free space.
• Reboot your Mac before a long gaming session. This clears memory and background processes.
• Check if the game has a “Metalâ€� version. Games ported to use Apple’s Metal API run much better than those using OpenGL or older APIs. Look for a “Metalâ€� setting or a separate download.

Troubleshooting

Game still runs poorly after all steps? Try the following:

• Check if the game is compatible with your Mac. Some games are Windows-only and run via Proton or CrossOver. Those will always have lower performance. Look for a native macOS version on the Steam store page.
• Reset the game’s settings. Delete the game’s configuration files (usually in ~/Library/Application Support/ or ~/Library/Preferences/). This resets to defaults—sometimes a corrupted setting causes issues.
• Reinstall the game. If verify files doesn’t help, uninstall and reinstall. This can fix deep corruption.
• Check for overheating. Use a free app like iStat Menus or Macs Fan Control to monitor CPU/GPU temperature. If it’s consistently above 90°C, clean the vents (if you’re comfortable) or take it to a professional.
• Create a new macOS user account. Sometimes a cluttered user library causes problems. Test the game in a fresh user account—if it runs better, your main account has a conflicting setting.
• Contact the game’s support. Many developers have Mac-specific forums or support pages. Search for “ Mac performanceâ€� to see if others have solutions.

Frequently Asked Questions

Why is my Mac slower than a PC with similar specs?

Macs often use integrated GPUs (especially base models) and prioritize power efficiency. Also, many games are ported from Windows and may not be fully optimized for Metal.

Does Steam’s “Shader Pre-caching� help?

Yes. In Steam Settings → Downloads, enable Shader Pre-Caching. It downloads pre-compiled shaders to reduce stutters during gameplay.

Can I upgrade my Mac’s graphics card?

No—Macs have soldered GPUs. You can only use external GPUs (eGPUs) with certain Intel Macs (Thunderbolt 3), but Apple silicon Macs don’t support them.

Will closing Steam improve performance?

Yes, slightly. Steam’s overlay and background processes use RAM and CPU. You can play games without the client, but you won’t get achievements or sync saves until you relaunch.

Is it worth using “Low Power Mode� on a MacBook?

No—Low Power Mode reduces CPU/GPU performance to save battery. Turn it off while gaming.

Why does my Mac get so hot when gaming?

Gaming is intensive and generates heat. Macs are designed to run hot but will throttle if they exceed safe temperatures. Ensure good airflow and consider a cooling pad.

Related

• Corrupt File Repair: What Works and What Doesn’t
• Local First Picks: 4 Smart Home Devices Worth Knowing
• Time Management Tools for Windows: Best Picks