Wifi adapter - why does the speed jump?

A

Alexander Osadchy2020-09-30 20:45:09

WiFi

Alexander Osadchy, 2020-09-30 20:45:09

Hello!

Tell me please, what could be the problem?

I used an external wifi adapter for a stationary PC for a long time .. that is, I have a router in another room, and in order not to pull the wire - an external USB adapter (TP-Link Wireless USB Adapter)

I didn’t like this thing with a wire, I went to buy an adapter for motherboard (to live in the system unit (I bought a TP-Link Wireless N PCI Express Adapter TL-WN881ND) - connected, it works - but the speed (speedtest) became extremely unstable

That is, I measure the first time: 60 download / 35 upload
I measure the second times: 20 download / 11 upload
And I measure again (the same after): 0.6 download / 0.2 upload

And the speed jumps so much - I thought it was a problem with the adapter, I went, changed it to another one - the situation is exactly the same

Although the external adapter stably holds: 90 download / 90 upload .. no matter how many times I measure ..

OS: Windows 10