[ale] WIFI mystery speed problems

[Steve Tynor]

An update and preliminary declaration of victory.

In one of many random config changes (mostly trying to change channels), 
I changed the "channel width" from 40 Mhz to 20 Mhz. Since making that 
change, the network has been rock solid - no silly slowdowns.   As I 
understand it, the 40Mhz setting was supposed to improve bandwidth but I 
never measured any improvement -- and in fact, turning it back down to 
20 Mhz seems to have solved my periodic slowdown problem.

Thanks again for all the help and advice,
Steve

On 2/18/16 12:31 PM, Steve Tynor wrote:
> I'm looking for some brainstoming ideas to explain why my home wifi 
> router's performance is suddenly acting so strange: periodically 
> (about once a day), performance (as tested by speedtest.net) 
> drastically decreases from ~30Mb/s to ~4Mb/s.
>
> When this happens, there's nothing I can do to make it better. 
> Rebooting the router has no effect.  The speed comes back when its 
> good and ready - not before.  These "outages" usually last about 12 
> hours.  Performance is bad from all clients - macbook, ubuntu laptop, 
> phones - so this seems to be router specific - not due to client config.
...
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