Hi @DavyB 

This doesn't necessarily mean the device is faulty. Here are several factors that could be causing the problem:

1. Interference: Even though it was working well initially, new sources of interference could have emerged. For example, a neighbor might have installed a new wireless device, such as a cordless phone, a baby monitor, or another Wi - Fi access point on a nearby channel. These can cause interference and degrade the performance of your EAP225. The tree in the line of sight might also have an impact. If the tree has grown leaves or there is more moisture in the environment (such as after rain), it can absorb and scatter the Wi - Fi signal more than before, leading to a reduction in performance.

2. Weather Conditions: Changes in weather can affect Wi - Fi signals. For example, high humidity, rain, or even strong winds can cause signal attenuation. If there has been a significant change in the weather since the device was working well, it could be a contributing factor.

3. Bandwidth Congestion: If there are more devices connected to the EAP225 now than before, it could lead to bandwidth congestion. Each device sharing the connection competes for the available bandwidth. Even if the signal strength is good, the limited bandwidth can result in slow speeds and connection time - outs. You might want to check if any new devices have been added to the network.

What You Can Do：

Check for Interference: Use a Wi - Fi analyzer app to check for other wireless signals in the area and see if there are any channels with less interference that you can switch the EAP225 to. 

You can find more details from the following link:

How to optimize wireless performance of EAP products

If you have tried all the above and the issue still persists, there maybe some hardware defect. you can contact retailer. 

You can also consider more powerful products. 

Get Outdoor WiFi with Outdoor WiFi Access Points