The LIGHTSPEED G305 Wireless Gaming Mouse is known for its ultra-low latency and reliable performance, making it a favorite among competitive gamers and everyday users alike. However, even top-tier peripherals can occasionally suffer from connection drops, input lag, or stuttering—especially during intense gameplay sessions. If you’re noticing inconsistent cursor movements or your G305 disconnects intermittently, you’re not alone.
This comprehensive guide will walk you through all the possible causes and solutions to fix lag or connection issues with the LIGHTSPEED G305 Wireless Gaming Mouse. Whether you’re using it on Windows, macOS, or a gaming console, these fixes will help restore the performance you expect.
Common Symptoms of G305 Lag or Disconnection
Before diving into fixes, let’s identify the specific problems users commonly report:
- Mouse pointer lags or freezes during gameplay
- Random disconnections and reconnections
- Delayed input or stuttering
- Cursor jitter or sudden sensitivity drops
- Button inputs not registering properly
These issues usually stem from interference, outdated drivers, hardware limitations, or power management settings.
Primary Causes of Lag and Disconnection in G305
| Cause | Description |
| USB interference | Other wireless devices interfere with the USB receiver signal |
| Weak battery | Low battery causes inconsistent signal and reduced polling rate |
| Outdated firmware or drivers | Older software may not work well with current OS or games |
| Poor receiver placement | Signal disruption due to long distance or blocked line-of-sight |
| Power saving features | OS or USB hub cuts off power to conserve energy |
| Faulty or busy USB ports | Inadequate USB bandwidth or port issues |
Step-by-Step Fixes for G305 Lag and Disconnection Issues
Step 1: Change the USB Receiver Port
Start with the simplest fix:
- Plug the receiver directly into a USB 2.0 port on your PC (avoid USB 3.0 if possible).
- Do not use a USB hub or docking station.
- Use a USB extension cable to place the receiver closer to your mouse.
Why? A clean line-of-sight between the mouse and receiver ensures a stable signal.
Step 2: Replace or Recharge the Battery
The LIGHTSPEED G305 Wireless Gaming Mouse uses a single AA battery. A weak or dying battery can reduce performance.
- Use a fresh alkaline battery or a fully charged NiMH rechargeable battery.
- Avoid using low-voltage or third-party lithium batteries not designed for high-power devices.
Also, check the battery status in Logitech G HUB if installed.
Step 3: Install or Update Logitech G HUB Software
Logitech’s G HUB software allows you to update firmware and optimize performance:
- Download and install Logitech G HUB.
- Open G HUB and allow it to detect your G305 mouse.
- Update the firmware if prompted.
- Customize your DPI settings, report rate (1000Hz recommended), and button assignments.
Note: Firmware updates often solve unexplainable lag or disconnection issues.
Step 4: Eliminate Wireless Interference
Nearby wireless devices can cause signal disruption:
- Keep the mouse away from wireless routers, Bluetooth devices, and USB 3.0 cables.
- Avoid placing the receiver near metal surfaces, which reflect signals.
- Try switching Wi-Fi to 5GHz instead of 2.4GHz, as the G305 also uses 2.4GHz.
Step 5: Disable USB Power Saving Features
Windows sometimes turns off USB ports to save power. This can lead to random disconnections.
Steps:
- Press Windows + X → Choose Device Manager.
- Expand Universal Serial Bus controllers.
- Right-click each USB Root Hub, select Properties.
- Go to the Power Management tab.
- Uncheck “Allow the computer to turn off this device to save power.”
Repeat for HID-compliant devices (your mouse) under Human Interface Devices.
Step 6: Update Mouse and USB Drivers
Ensure your drivers are up to date:
- Open Device Manager.
- Right-click HID-compliant mouse > Update Driver.
- Also update USB controller drivers.
- Restart your PC after updates.
Outdated drivers can conflict with polling rates and cause noticeable lag in high-precision gaming.
Step 7: Adjust Mouse Polling Rate and DPI
Polling rate and DPI settings affect responsiveness.
- Open Logitech G HUB.
- Set report rate to 1000Hz.
- Set DPI to a consistent value (800–1600 for FPS games, higher for general use).
- Disable DPI shift buttons temporarily to test for misclicks.
Inconsistent DPI changes can appear as lag or jitter.
Step 8: Reset the Mouse
Perform a soft reset:
- Remove the battery.
- Hold the left-click + right-click + scroll wheel for 10 seconds.
- Reinsert the battery and reconnect the receiver.
This resets internal settings and can clear up persistent issues.
Step 9: Test on a Different Computer or Surface
- Test the mouse on another device.
- If it works fine, the issue may be with your OS, drivers, or USB ports.
- Use a high-quality mousepad to avoid sensor misreads on glossy or reflective surfaces.
Advanced Fixes and Diagnostics
Use Logitech Connection Utility Tool
If your mouse randomly disconnects, use Logitech’s official connection tool to re-pair the mouse with the receiver.
- Download the Logitech Connection Utility.
- Unplug and reinsert the USB receiver.
- Follow the wizard to rebind the G305.
BIOS/UEFI Settings
Some BIOS settings can affect USB polling or power management.
- Access BIOS (usually DEL or F2 on startup).
- Disable options like “USB Selective Suspend” or “USB Legacy Mode”.
- Save changes and reboot.
Best Practices for Using the G305 Lag-Free
| Practice | Why It Matters |
| Use quality AA battery | Ensures full performance and prevents random dropouts |
| Keep receiver close and unobstructed | Stronger, interference-free connection |
| Regularly update G HUB & firmware | Fixes bugs and improves latency management |
| Avoid USB 3.0 ports near RF sources | USB 3.0 can interfere with 2.4GHz signals |
| Disable USB power-saving | Prevents OS from cutting power during inactivity |
The LIGHTSPEED G305 Wireless Gaming Mouse delivers pro-grade performance, but it’s only as reliable as its setup. Lag and connection drops usually stem from minor technical oversights like battery strength, USB interference, or outdated software.
By following the troubleshooting steps above, you can restore your mouse’s peak performance and enjoy uninterrupted gameplay. Always keep your drivers up to date, use quality batteries, and position your receiver correctly for the best experience.
Frequently Asked Questions (FAQ)
Q1: Why does my G305 lag only during games but not in desktop use?
A: Games demand higher polling rates and consistent performance. Lag may appear due to high CPU/GPU load, USB power-saving features, or wireless interference.
Q2: Can I use the G305 with a rechargeable battery?
A: Yes. A 1.2V NiMH rechargeable battery works well. Make sure it’s fully charged for peak performance.
Q3: How do I know if my G305 battery is low?
A: You may see a red blinking LED under the scroll wheel or experience lag/stutter. G HUB also shows battery levels.
Q4: What is the best polling rate for G305 gaming?
A: 1000Hz (1ms response) is ideal for gaming. It provides smoother and faster input recognition.
Q5: My G305 disconnects frequently even after changing batteries. What should I do?
A: Try re-pairing with Logitech Connection Utility, use a USB extension cable, check for driver updates, and test the mouse on another computer to rule out hardware failure.