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Need help on my wifi speed

Posted on 1/1/20 at 4:21 pm
Posted by Htown Tiger
Houston
Member since Sep 2005
2312 posts
Posted on 1/1/20 at 4:21 pm
I have Xfinity and have been noticing declines in my wifi speed. When I run the speed test from xfinity over wifi, I'm getting anywhere from 5 Mbps to 15. Its very inconsistent. And I'm running the test from my phone directly next to my modem/router (one that Xfinity recommended for my type of internet speed and service).

When I bring my laptop and hook up via ethernet, my speed tops 200 Mbps. What is causing the vast decline in my Wifi?
Posted by Htown Tiger
Houston
Member since Sep 2005
2312 posts
Posted on 1/1/20 at 4:46 pm to
Separate question I wouldn’t mind some insight into:

In the above example, I disconnected an Ethernet cable that ran to a separate access point on the other side of the house in order to hardwire into the main modem/router and test the speed. That’s the 200 Mbps I was getting.

After that, I disconnected the laptop, plugged the Ethernet cable back into the modem, and then took my computer to the access point and plugged in via Ethernet into that unit and ran the speed test off of that. The highest I ever got was about 100 Mbps and a few times much less than that (30-60). If I’m hardwired via Ethernet from the main modem to this access point, why do I have such a drop in speed? Again, this example is no WiFi, all Ethernet connections. TIA
Posted by r3lay3r
EBR
Member since Oct 2016
1807 posts
Posted on 1/1/20 at 5:45 pm to
The speed can depend on the access point/router age and speed rating. Many older switches or routers topped out at 100 Mbps. Also the quality of the cable and length of runs can degrade performance. For wifi the speed is dependent on the number of connections to the router, distance from the router and band connected to. You'll get higher throughput with 5GHz than 2.4GHz, but the falloff will be greater as you move away from the Wifi point, while 2.4GHz has a greater transmission range.
Posted by castorinho
13623 posts
Member since Nov 2010
82009 posts
Posted on 1/1/20 at 8:28 pm to
Replace your router
Posted by scottfruget
Member since Nov 2010
3392 posts
Posted on 1/1/20 at 9:43 pm to
Try a firmware upgrade
Posted by gpburdell
ATL
Member since Jun 2015
1418 posts
Posted on 1/2/20 at 1:34 am to
quote:

After that, I disconnected the laptop, plugged the Ethernet cable back into the modem, and then took my computer to the access point and plugged in via Ethernet into that unit and ran the speed test off of that. The highest I ever got was about 100 Mbps and a few times much less than that (30-60). If I’m hardwired via Ethernet from the main modem to this access point, why do I have such a drop in speed? Again, this example is no WiFi, all Ethernet connections. TIA


Two guesses:

1) That AP only has 100 Mbps ethernet jacks and not gigabit. If that's not the case, make sure the cable you use from laptop to AP is at least CAT5.
2) The AP doesn't have the processing power to handle above 100Mbps speed. How old is this AP? What's the model?


As to your slow wifi that could be numerous things. On your phone/laptop validate your wifi connection. Are you connecting on 2.4 or 5 GHz? There are several wifi 802.11 protocols it could be using (a,b,g,n,ac) which determine the max possible speed.

You want to be using n or ac as they both support at least 300 Mbps while the others are 54 Mbps or less. When you look at your wifi connection it should say what your link speed is.

It's also possible you have a ton of interference on the channel that your AP is using. Moving it to another channel could help. Most APs that are set to auto will figure out the best channel to use but not always fool proof.

Is your second AP on the same channels as your primary AP?
Posted by Zendog
Santa Barbara
Member since Feb 2019
4457 posts
Posted on 1/22/20 at 3:20 pm to
(no message)
This post was edited on 1/22/20 at 3:21 pm
Posted by WallsAllAroundMe
Member since Jan 2016
1064 posts
Posted on 1/24/20 at 3:09 pm to
(no message)
This post was edited on 1/27/20 at 4:20 pm
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