Hello @BillSomerset66
Nest WiFi uses multiple access points, all advertising the same network name. This allows client devices to connect to the nearest access point, expanding the usable coverage area.
However, there are a number of potential issues that can cause problems, including (but not limited to):
- Client devices are responsible for deciding which access point to connect to. Nest WiFi does provide devices with extra information they can use to make better decisions, but most fixed devices (like TVs) don't support the standards used to communicate that information (802.11k and 802.11v). Without that information, some clients do a better job than others.
- When two WiFi devices are too close to each other (less than a few feet), they can have trouble communicating – sort of like trying to have a conversation with someone by shouting loudly directly into their ear. It's possible this is happening here, and you may have some better luck by moving the nearby access point a little further away (just make sure it's still close enough to your primary Nest WiFi Router unit that it can continue to get a solid 5GHz connection for itself – no more than one or two rooms away).
- When multiple independent WiFi systems are sharing the same channel as each other, they can see each other and can gracefully share the spectrum by avoiding each other's transmissions. Basically, congestion (sharing capacity) is better than interference (corrupting other traffic). However, the 5GHz radio spectrum used by WiFi isn't limited to WiFi. Other devices that often use the same part of the 5GHz band as Nest WiFi include sound bars that support wireless surround speakers and/or wireless subwoofers. They transmit continuously (while the TV is on) and don't use WiFi, so they cause interference rather than congestion. If you have a sound bar (or if your TV effectively has a similar feature built in), this could be an issue here as well, and could cause the TV to switch to a different access point. There aren't great solutions here, though moving your access point further away (similar to #2 above) may help. The best solution is to find a way to connect your TV via Ethernet instead of WiFi (but you'll still need to move that access point away from the source of interference, since you presumably want WiFi coverage to work in that area).
As you can see, if it's either #2 or #3, then it ends up tripping up #1. I don't know if any of the above applies to your situation, but I hope it gives you some things to try.
