Issues With Wifi Adapter

[Pulse]

I know there has been a few of these threads, but I really can't seem to find the answers that I'm looking.

Since I upgraded my WiFi adapter to a TP-Link T4UH V2 I've always felt underwhelmed by it. I have a 300mb BT fibre line which it has never been able to make full use of despite it connecting to the by router with a full signal and normally between 650 and 866Mbps.

During speed test it normally caps out at around 220Mbps, which I also normally find out is the max speed that I can transfer to my NAS which is a WD My Cloud connected directly to the router via a 1Gbps cable.

This gives me roughly 25-27MB/s transfer speed in windows. The odd thing is straight after updating the drivers early today it was achieving twice that at around 50-54MB/s and for the first time ever it hit almost 260Mbps on a speedtest.

But what could be causing such a huge difference in speeds? I found it extremely odd that it is maxing out well short of what I thought it could achieve? Or I am just wrong and this is what I'll have to accept or upgrade again?

 

[Pulse]

Very informative, thank you. And yeah it's definitely plugged into a USB 3.0 port as that was one of the first things I checked.

Just strange how right after updating the driver, which eventually was unstable and I had to roll back to windows driver, it was transferring at double it's previous speed.

It may well be what you suggested about the speed set to the slowest device. Which I'm guessing will be our living room TV as that was showing up in the list last night when I was testing it, but even that is connected on the 5Ghz channel and is much closer to the router, but may well be connected at a slower rate.

I'll just live with it. It's more of an annoyance than anything, I transfer things from my phone to the NAS and I'm guessing that is limited by the phones storage as that only achieves around 22MB/s and doesn't seem to vary.

Just considering it says that it's connected at 650-866Mbps, I would have thought it would easily max out my internet connection. My phone does max out the connection at 300-305Mbps but it's a S10+ and connects to the router at the same sort of speeds as the WiFi dongle which is why I felt disappointed with it.