Question Wifi speed keeps oscillating

[Asphodelus]

My wifi speed repeated climbs up to ~350 mbps then drops back down to ~50 mbps every few seconds - here's a screenshot:



I don't expect wifi to be 100% stable or anything, but the regularity here makes me wonder if there's some kind of configuration issue.

 

[VirtualLarry]

Note that is "Throughput" and not "Link rate".
What do you have downloading?

 

[EXCellR8]

welcome to wireless networking...

 

[mnewsham]

Could be pretty much anything causing that, from your wifi adapter drivers, windows issue, router issue, or radio spectrum interference in your local area.

If you want consistent performance, use ethernet.

 

[VirtualLarry]

Note also, that for certain file-servers on the internet, they intentionally serve up files in "bursts" like that. It may not even indicate that something is necessarily wrong.

Edit: Streaming video is also served like that.

 

[Asphodelus]

This is an upload to a (wired) NAS, so no internet is involved.

Reading back the same file afterwards for integrity verification was much smoother, with a very consistent 350-400 mbps: