This person is experiencing **Wi-Fi stability issues** after upgrading from a 1G fiber connection to a 2.5G fiber connection. The issue started when they upgraded their router to a TP-Link model with 2.5G WAN support. The previous 1G router worked fine, but the new 2.5G router caused frequent Wi-Fi disconnections.
TP-Link technical support helped them adjust the LAN card settings, and the issue was identified as the LAN card frequently going to sleep. Since the option to prevent the LAN card from sleeping was grayed out, they had trouble fixing it. After setting the power scheme to "never let the PC sleep," they modified several settings in the MediaTek LAN card properties. Specifically:
- Set **802.11ax/az/acc/n property** for WoWLAN (Wake on Wireless LAN) to "ARP Offload" and disabled it.
- Disabled **GTK rekeying for WoWLAN**.
- Set **Miracast band** to "Auto".
- Set **Preferred band** to "No preference".
- Disabled **Roaming preference**.
- Set **Transmitting power** to the highest.
- Disabled **U-APSD support**.
- Enabled **Wake on magic packet**.
After making these changes, the Wi-Fi card started working well. They are also waiting for a 50-foot Cat7 cable to directly connect their laptop to the router for the full 1G speed, as their desktop is already speed testing at 2.24G with the 2.5G connection.
### Solution Recommendations:
1. **Check the LAN card settings**: The issue arose because the LAN card kept going to sleep. Ensure the LAN card is set not to sleep by adjusting its properties.
2. **Adjust Wi-Fi card settings**: Follow the settings mentioned above to ensure the Wi-Fi card functions correctly. Disabling features like "ARP Offload for WoWLAN" and "GTK rekeying for WoWLAN" could be critical.
3. **Check the power scheme**: Set the power scheme to "never let the PC sleep" to prevent any interruptions caused by sleep mode.
4. **Use an Ethernet cable for direct connection**: If Wi-Fi issues persist, connecting the laptop directly to the router using an Ethernet cable may provide a more stable connection.
By following these steps, you can address the issue the person is facing.
( if it is too difficult to do , just use your old wifi router or call and take technical support from router company )
