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Realtek 8821CE Wireless LAN/Max Speed?

71K views 31 replies 4 participants last post by  irbrenda  
#1 ·
I think I might have found my answer, but I could use some input just in case. I have a gig connection coming in, however my speeds have been drastically fluctuating, sometimes around 50mbps and have recently went back up to the 150-200 range. Comcast has done there thing, and say there is no line or router problems. I have a Realtek 8821CE Wireless LAN for my laptop WIFI connection. My wifi properties are showing a connection of 433.3. Is this meaning that the WIFI card has a MAX speed of handling 433.3 and there is no chance of getting closer to my gig speed? Even if this is the case, it doesnt explain why I am only getting 200 at best. FYI, when I hard wire in to the router, my speeds go anywhere from 50-300. My Galaxy S9 phone is clocking speeds at damn near 400 though......ANy ideas?
 
Discussion starter · #3 ·
Thanks for the prompt response! I pay for Gig, right now I am getting:
DL: 122.3
UL: 21.9
Latency: 45ms

I have purchased a AC1900 Netgear Nighthawk adapter if thats what I need to get the full potentional, but if there is something I can tweak with what I already have, I would rather do that
 
Discussion starter · #5 ·
Thanks Frank. Yes, that chart is correct. My package is the the Gigabit / $84.99. I went ahead and installed the Nighthawk and my speed showing in Network Properties is now 1.3Gbps, and my xfinity speed test shows 133.3Mbps, so still not much of a change even with the new adapter.
 
Discussion starter · #7 ·
Yeah, I tried multiple speed tests ans even download a programs cause sometime browsers are the problem. Hopefully someone can help me with changing settings
 
Discussion starter · #9 ·
Thanks! Actually thats not what I have, my gateway is a Technicolor CGM4140COM. My on board wifi is a Realtek 8821CE. I have purchased a AC1900 Netgear Nighthawk adapter , just in case I need to update my wifi adapter to get the desired speed. I am connected 5Ghz as well, but I am not getting anywhere close to the speed im paying for, so thats why I need help to see if there are additional settings I need to change.

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Discussion starter · #13 ·
Thanks so much for the time and assistance!! I am logged into the router. Not sure if the screen cap below gives you the info you need, if not please let me know

Network type : Infrastructure
Authentication : WPA2-Personal
Encryption : CCMP
BSSID 1 : 3c:b7:4b:80:37:16
Signal : 100%
Radio type : 802.11ac
Channel : 44
Basic rates (Mbps) : 6
Other rates (Mbps) : 9 12 18 24 36 48 54

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Discussion starter · #15 ·
This info is helpful and it shows it's not adjusted strictly likely resulting in lower link speeds.

Note that if there are other devices in your house that are not AC capable these modifications may disconnect them for network, adjust these setting temporarily just to see if there is difference:

1. Mode: 802.11AC (if strict option available, could also be 802.11 ac/n)
2. Channel Bandwidth: 20/40/80/160

Save settings, reboot router

Next step:
1. Open device manager
2. locate your WI-FI adapter
3. right click it, select properties
4. look under "advanced" tab (or "Driver" tab)
5.take a look at what bands does adapter operate (set to AC explicitly - OR - n/ac explicitly)
6. what other options are there, take screenshots of all options.
Thanks! I cant seem to edit these settings. It notes that the settings are being managed automatically and the option to change to manual is greyed out
 
Discussion starter · #17 ·
The app has the same access. I checked out some for the xfinity forums and it looks like they lock these down. I should have just bought my own.
 
Discussion starter · #20 ·
Discussion starter · #22 ·
I don't know if you get this router from ISP or you bought it your self, in both cases it's worthless piece of hardware.

If you bought it your self you have all rights to get replacements, otherwise you should read your ISP agreement between you and ISP and demand operational router if agreement permits.

I'm not 100% sure these changes will give you better speeds, so don't just go a buy another one blindly, good routers can be expensive, and at a minimum you should research gateways, their options and capabilities for what you need first.
Totally understand, yes its from the ISP. Historically I havent used ISP equipment, but I did this time, and regret it for sure. Looks like some models still allow changes and some dont. Ill wait again for Comcast, thhis has been going on for 3 weeks now, so I was really hoping to beat them at their own game. I really apprecaite you taking the time to help out! If I end up getting access I will try what you said and let you know. Thanks again!
 
Discussion starter · #23 ·
This has to be a comcast issue, reset the router to factor settings.....for a short time I was getting 500 down, now its back to as low as 25 and maybe up to 200 from time to time
 
Discussion starter · #25 ·
Comcast / Xfinity is my ISP. Sorry I missed the driver question. Below are the drivers. I provided both Realtek being the onboard wifi connection and the Netgear being the adapter I purchased (thinking I might have needed to have an updated adapter to get both speeds, however I am getting apx the same speeds on both)
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Discussion starter · #31 ·
Agreed, even LAN doesnt get exactly 500. The ISP tech was supposed to be here this morning, they somehow managed to screw that up, now supposed to be here this afternoon. This was been at least 3 weeks of this issue....probably been longer and I just started looking into it one day
 
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