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Troubleshooting Luna Display Quality Issues

Updated over a month ago

Quick answer:

  • Check resolution settings in both Luna Display and computer settings

  • Ensure strong connection (Wi-Fi, cable, or Ethernet)

  • Update Luna Display software on both devices

  • Restart both devices and reconnect

  • Lower resolution and refresh rate if experiencing performance issues


🔍 Blurry or Fuzzy Display

What causes this?

Usually, resolution mismatches between your devices or connection issues.

Try these solutions:

Fix resolution settings

  1. In your computer's display settings, try these common resolutions:

    • 1920 × 1080 (Full HD)

    • 1680 × 1050

    • 1440 × 900

    • 1280 × 720

Check your connection

  • For cable connections: Verify the cable is registered in network settings and properly connected

  • Ensure both devices are on the same strong Wi-Fi network

  • Try moving closer to your router for wireless

  • Restart your router if needed

Update everything

  • Update Luna Display on both devices

  • Check for computer and secondary device updates

🔬 Everything Appears Too Tiny

What causes this?

Your computer is sending a resolution that's too high for comfortable viewing on your secondary device screen.

Try these solutions:

Adjust display scaling

🍎Mac

  1. System Preferences > Displays

  2. Select your Luna Display

  3. Choose "Scaled"

  4. Select a lower resolution (try 1920 × 1080 or 1680 × 1050)

🖥️Windows

  1. Settings > System > Display

  2. Select your Luna Display monitor(s)

  3. Adjust "Scale and layout" percentage

  4. Try 100%, 125%, or 150% scaling

Use built-in zoom

  • Use pinch gestures on touch devices to zoom in/out

  • Use keyboard shortcuts (Cmd/Ctrl + Plus/Minus) for zoom

🎨 Pixelated or Grainy Display

What causes this?

Often related to resolution and refresh rate settings or a poor connection.

Try these solutions:

Adjust quality settings

  1. Open Luna Display settings

  2. Lower resolution to reduce pixelation

  3. Adjust refresh rate (try 30Hz vs 60Hz)

  4. Check out our guide for more details:


    ​4K and 5K Resolution Support for Luna Display

Improve connection

  1. Switch to cable connection (Thunderbolt, Ethernet, USB) instead of wireless

  2. Ensure strong Wi-Fi signal (move closer to router)

  3. Close bandwidth-heavy apps on both devices

Reset Luna settings

  1. Follow the instructions in the following guide based on your operating system:
    ​

    How to Factory Reset the Luna Display Apps

🎬Can't Achieve Desired Resolution (4K/5K)

What causes this?

Hardware limitations, connection type, or software restrictions.

Try these solutions:

Use a cabled connection

Connect via Ethernet, Thunderbolt, or USB (macOS 10.15+ required). Using a cabled connection improves the latency for connections, making your experience smoother. With a cabled connection, you can expect between 1-4ms of latency.

Check Mac specifications

  1. Older Macs may not support 4K/5K output to external displays

  2. Check Apple's compatibility list for your Mac model

Close unnecessary apps

  1. Free up system resources

  2. Quit other display-intensive applications

  3. Check Activity Monitor for high CPU/GPU usage

Adjust display settings

  1. Turn off Retina mode in Luna Display

  2. In your Display Settings, adjust the resolution until you find the desired quality


​

🍎 Issues After macOS Updates

What causes this?

macOS updates can sometimes change display drivers or reset preferences.

Try these solutions:

Update Luna Display first

  1. In the Luna menu, click Check for updates.

  2. If an update is available, you can install it now.

  3. Restart your device and try again.

Reset display preferences

  1. System Preferences > Displays

  2. Hold Option and click "Detect Displays"

  3. Reconfigure your Luna Display settings

⚡ Lag and Performance Issues

What causes this?

Connection issues, system resources, or suboptimal settings.

Try these solutions:

Optimize your connection

  1. Use 5GHz Wi-Fi instead of 2.4GHz

  2. Connect via cable (Thunderbolt, Ethernet, USB) for best performance

  3. Ensure both devices are close to your router

Adjust performance settings

  1. Luna Display settings: Lower resolution and adjust the refresh rate

  2. Computer display settings: Match resolution and refresh rate

Free up system resources

  1. Close unnecessary applications on both devices

  2. Check system monitor for high CPU/memory usage

  3. Restart both devices if they've been running for a long time

Test with different apps

  1. Some apps are more resource-intensive than others

  2. Try basic apps to test baseline performance

  3. If you see an improvement with basic apps, it may be that your other applications are consuming too many resources

Related Articles
Computer-to-Mac Mode: Use Your Mac as a Second Display
Luna Display Cable Connection Troubleshooting: Ethernet & Thunderbolt
How do I set up Luna Display on my Mac?
How to Check Your Luna Display Connection Type
Luna Display: Quick Fixes for Display Issues
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