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Manoj Swami
Manoj Swami

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How to Fix Logitech MX Master 3S Mouse Lag on Mac: Simple Terminal Command Solution

If you’re using a Logitech MX Master 3S mouse with a MacBook M1 and suddenly experience lag or jitter, you’re not alone. This frustrating issue can appear out of nowhere—even after trying common fixes like clearing cache, rebooting, or reinstalling the Logitech Options app. I faced this problem twice in the past month, and after extensive research, I found a simple Terminal command that solved the lag instantly. Here’s a step-by-step guide in plain English, including what the command does and how you can revert it if needed.

What Causes the Logitech Mouse Lag on Mac?

The lag typically happens due to interference between Bluetooth and Wi-Fi, as both use the 2.4 GHz frequency band. On Apple Silicon Macs (like the M1), this interference can become more noticeable, especially with Bluetooth peripherals like the MX Master 3S mouse. Sometimes, uninstalling the Logitech Options app helps, but the issue can return unexpectedly.

The Ultimate Solution: Change Bluetooth Coexistence Mode

After trying various fixes, the only thing that worked for me was changing the Bluetooth coexistence mode using a Terminal command. This tweak helps your Mac manage Bluetooth and Wi-Fi signals more efficiently, reducing lag and jitter for your mouse.

Step-by-Step Fix

  1. Open Terminal

    You can find Terminal in Applications > Utilities, or search for it using Spotlight.

  2. Run the Command

    Copy and paste the following command into Terminal, then press Enter:

   sudo defaults write /Library/Preferences/com.apple.airport.bt.plist bluetoothCoexMgmt Hybrid
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You’ll be prompted to enter your Mac password.

  1. Reboot Your Mac Restart your computer for the changes to take effect.

That’s it! Your Logitech MX Master 3S mouse should now work smoothly, with no lag or jitter.

How Does This Command Work?

The command changes your Mac’s Bluetooth coexistence mode to “Hybrid.” Here’s what that means:

  • Performance Mode: Prioritizes Bluetooth, which can interfere with Wi-Fi.
  • Balanced Mode: Tries to balance Bluetooth and Wi-Fi performance.
  • Hybrid Mode: Prioritizes Wi-Fi, but still maintains good Bluetooth performance.

Setting the mode to “Hybrid” usually provides the best balance for most users, minimizing lag without sacrificing Wi-Fi speed.

How to Revert the Change

If you ever want to undo this tweak, run this command in Terminal:

sudo defaults delete /Library/Preferences/com.apple.airport.bt.plist bluetoothCoexMgmt
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Then, reboot your Mac again.

Other Troubleshooting Tips

If the above solution doesn’t work, try these additional steps:

  • Reset Bluetooth Module: Open Terminal and run: 
  sudo pkill bluetoothd
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Then reconnect your mouse.

  • Use a USB Receiver:

    If you have a Logi Bolt or Unifying receiver, use it instead of Bluetooth for a more stable connection[1].

  • Move Other Devices Away:

    Keep your phone and other wireless devices away from your mouse and Mac to reduce interference[1].

Conclusion

The Bluetooth coexistence mode fix has worked perfectly for me and many others using the Logitech MX Master 3S on MacBook M1. It’s a simple, safe tweak that you can easily revert if needed. If you’re struggling with mouse lag, try this Terminal command before replacing your mouse or reinstalling macOS.

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