Over the years I've used a number of WiFi routers, expensive and
cheap with Flex XCVRS. With countless WiFi adapters in the computers.
They all seem to have one thing in common, they randomly drop packets.
It is frustrating to watch SmartSDR Network Status vary wildly
between Excellent and Poor with no apparent cause. These swings between Green
and Red have little apparent effect unless the connection is actually
lost. Drop rates of 0.01% - 0.05% are typical but variations in distance
show little effect. This happens when listening and with no strong RF in the air.
Why do line of sight WiFi paths of only 6 to 60 feet behave this way? Good connections like this should be rock solid hour after hour. ???
The indicator is a packet health indicator, not an RF strength indicator.
The packet delivery quality can be affected not only by your own network traffic, but by your neighbours network traffic as WiFi is a party line so to speak.
If you neighbour is streaming NetFlix and the router or the client can hear your neighbours traffic, it has to give pause. That is the easy way to explain it. There are a bunch more moving parts than that, but it will give you an idea.
You won't see it in other platforms like streaming video, as the clients buffer the video data. That is something you can't do in live HF radio communications.
I hope that helps a bit.
Channel 6 is actually 4,5,6,7,8 and you really don't want to overlap channels and cause more interference.
If you can move to 5Ghz (802.11A), your range is less, which is good since it is less prone to interference from your neighbours.
Yes, WiFi as we know it is broken.