Hi @ODCI-IT 

You may try the following troubleshooting steps:

1. Check Wireless Signal Strength and Interference

• Signal Strength: Ensure that the wireless signal strength is strong in the areas where you are experiencing poor connectivity. You can use a Wi-Fi analyzer app to check the signal strength and identify any weak spots.

• Interference: Check for potential sources of interference, such as other Wi-Fi networks, microwaves, or physical obstructions. Try changing the Wi-Fi channel to one with less interference.

2. Verify QoS Configuration

• QoS Settings: Ensure that your QoS settings are not limiting the bandwidth for wireless devices. You can configure QoS to prioritize certain types of traffic, but be careful not to overly restrict the bandwidth for wireless clients.

• Bandwidth Control: Check the bandwidth control settings on your Omada Gateway (ER605) to ensure that they are not throttling the wireless traffic.

3. Check Device Firmware

• Firmware Updates: Ensure that all your network devices (Ruijie router, TP-Link PoE switches, and TP-Link APs) are running the latest firmware versions. Firmware updates can often resolve performance issues and improve compatibility.

4. Reset Network Devices

• Factory Reset: If the issue persists, consider performing a factory reset on the OC200 and reconfiguring it. This will restore the device to its default settings, allowing you to reconfigure it without any previous settings causing issues.

Additional Tips

• Speed Test: Use a reliable speed test tool (like Speedtest.net) to measure the internet speed from different devices and locations within your network. This can help you pinpoint where the issue is occurring.

• Client-Specific Issues: If only certain devices are experiencing poor connectivity, check the network settings on those devices. Sometimes, client-specific issues (like outdated drivers or incorrect network settings) can cause connectivity problems.