New PC - internet slowed to < 1mb/s - possible issue with Realtek RTL8822CE 802.11ac PCIe Adapter

[Paulmcuk]

Hi. Recently purchased a new HP Pavilion 24-k0012na All-in-One PC, AMD Ryzen 7, running Windows 11 (Windows 10 installed at purchase). Everything was fine for the first couple of days but then my wireless internet speed kept dropping to under 1mb/s (usual around 55mb/s). All other devices connected to the wifi operate at normal speed, as did my old PC. 

Rebooting and/or disconnecting/reconnecting wifi initially provided short term fix but then that stopped having any effect. Based in similar issues found on this forum I tried updating the driver for the Realtek RTL8822CE 802.11ac PCIe Adapter to 2024.0.10.223. This appeared to resolve the issue but after a couple of weeks it started happening again. Rolling back the driver and updating again sometimes resolves it but only for that session - if the system goes to sleep or I restart then the issue returns. Have also tried uninstalling/reinstalling the network adapter but that did nothing.

Grateful for any suggestions. 

[BeemerBiker]

I am guessing that every time you reboot or disable / enable the Wi-Fi the channel is changing.  Sometimes the channel is good other times there is interference.

Make sure you are in the 5ghz band as there are a lot of gadgets that mess up the older 2.4ghz bands

Also ensure the wireless mode includes "n" plus a lot of others  such as "a/b/g/n/ac"

[Paulmcuk]

Thanks for the suggestions. Have changed preference to 5g but don't have the option of "n" for wireless mode. Only have options 1-6, 6 being 11a/b/g (which was already selected). 

Will see if changing preference resolved things. 

[BeemerBiker]

Question:  Are you in a country where "n" is not an option?  I see "na" in your system ID so I assume North America.

If your router does not support "n" you should  consider an upgrade.

Does your older computer have the "n" band?

If it is the driver missing "n" then that is a big mistake for realtek as "n" can be faster.

[Paulmcuk]

No, I'm actually in the UK. Sorry, should have made that clear. Have now amended my profile accordingly!

[BeemerBiker]

The part number you gave for your system is 24-K0012na 

I am guessing that "na" is North America and things are different across the pond

Please check with HP over there and see if your Wi-Fi m.2 board is correct for your area.

If not there should be fairly cheap to replace it with one UK qualified.

[Paulmcuk]

Thanks for the advice. Will look into it as you suggest.