@AdamF,

Depending on how you configured the internet connection type for the router, you may end up needing to change it from Dynamic to something like static or whatever is recommended for your router. The Dynamic Setting should work find in most cases, however there are a few modems/ISPs that require specific settings. I would recommend configuring your Fiber, make sure to place the modem in bridge or passthrough mode if needed, and then reconnecting the router to the modem. the router should receive new credentials  when it is connected without changing any settings.

  @AdamF,

Make sure that you are testing on a wired connection. The speed test in the deco app does not measure the speed to the router, it measures the speed to your device/phone. This means that it is subject to wireless interference and the normal bandwidth and speed costs that come with wireless connections.

I would also recommend checking your QoS settings and ensuring that they are set to or above the speeds that you are expecting from your ISP. If the speed test is being performed over a hardwired connection, there are a few other settings that we could look at.

  @AdamF,

Are the speeds the same when the laptop is connected to the router instead of the ONT?

You may try changing your DNS server to see if the overall throughput increases.

Also, make sure that you are using the most up-to-date firmware, as there have recently been many optimizations to allow better connectivity with Fiber Networks.

Your Decos are using WiFi 5, which is beginning to become outdated, however, I think you may be able to raise you wireless speed slightly with some tweaking. In reality, however, Wi-Fi 5 only supports up to 200mbps which is further degraded from environmental factors