Whilst you can use your previous router (if it is the Sagemcom 5364) I can help you get your eero running much better.
Where in your property is the eero situated? Is it in a cupboard or out in the open & roughly how high is it off the floor? What electronic equipment is near it? Although it is difficult to predict the exact direction WiFi signals will propagate, are there any large metal objects, glass or water (tanks) that they might have to go through to reach your TV?
Slow speed, intermittent dropouts, breaks in the signal or no signal on some or all devices or no internet access might be caused by Wi-Fi interference from other local networks, which can also lead to a permanent reduction in speed. No ISP can be responsible for your local environment, this is mainly a byproduct of the popularity of Wi-Fi.
However, other factors should be investigated first. When this happens, what is the status displayed in the app for the internet connection? Do you have any wired connections & if so, how do they perform?
Generally speaking, the 2.4GHz band suffers a lot more from interference than the much faster 5GHz band, but the 2.4GHz one can sometimes have a better range, but this all depends on your local area.
In other words, I try to help you optimise your Wi-Fi connection. The next stage involves sending out a guide to you to help you get me some important diagnostic results so that I can analyse them for you and recommend changes to your router configuration to solve them.
I only send this out to people who request it.
Whilst the eero is supposed to manage Wi-Fi interference, if this is very bad, particularly in the 2.4GHz band, then it cannot do anything about it, no router can. The same goes for any router at that point. It is possible that you may also need to purchase additional eero nodes as it is supposed to operate as part of a mesh system. I can help with any of this. However, I would suggest that you follow my help to find out what the root cause of the problem is, before throwing money at it.
