Wireless speeds

[#1]

I have refrained asking for ages, to stop me looking too much of a techno pleb, but curiosity has finally got the better of me.

My laptop installs a Realtek 8821CE Wireless LAN 802.11ac PCI-E NIC wireless adaptor. I am on the 300MB speed product, which to be fair is more than adequate. My laptop wireless speeds hardly ever increase above 150mb. My work laptop also struggles to get above this dizzyingly high download speed, not sure what adaptor that has as it isn't currently fired up. Neither laptop has an ethernet port for fixed testing. My Samsung S22  phone on the other hand always gets full download speed. 

Obviously my Android phone adaptor has a different protocol to my both my laptops, just wondering if buying a plug in usb adaptor could improve things? There are many out there, so which one should I bel looking at please?

Thanks

Mark

[#2]

Have you checked that the 8821CE is connecting to the 5ghz band and not the 2.4ghz band ?

[#3]

Moderators Note

This topic has been moved from General Chat to My Router.

[#4]

The Realtek RTL8821CE supports connection speeds up to 433MHz.   ( a speed test is always going to be less than this )

What kind of connection speeds are being achieved ?