Archer C80 unbelievably low speed

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Archer C80 unbelievably low speed

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Archer C80 unbelievably low speed
Archer C80 unbelievably low speed
2021-12-04 11:40:42 - last edited 2021-12-09 06:30:21

My Archer C80 showed unsatisfying performance, then I tried to check the wireless speed, it is very surprising that even the router sit next to my PC and the signal is 100%, the link speed is only 300Mbps receive and 144Mbps transmit, this is even much slower than the modem/router I got from my ISP which shows 300Mbps receive & transmit, did I get a defect product?

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Re:Archer C80 unbelievably low speed-Solution
2021-12-07 11:01:05 - last edited 2021-12-09 06:30:21

@Kevin_Z 

Yes, something like that, but I Checked them through another way (wifi-properties), and double-checked them with command prompt>netsh wlan show interface, the problem has been resolved after a friend of mine told me to change the channel width from auto to 40MHz in 2.4GHz and 80MHz in 5GHz. But the question is, why the default setting gives very poor signals?  

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Re:Archer C80 unbelievably low speed-Solution
2021-12-08 10:12:08 - last edited 2021-12-09 06:30:24

@nyonyo 

 

Hello, channel width basically controls how broad the signal is for transferring data, which dictates how much data can pass through and at what speed, the wider channels are usually associated with more data transferred at faster speeds.

 

For more details about 802.11 wireless rate/speed concerns, please visit https://community.tp-link.com/en/home/stories/detail/317.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer AX55V2 Supports WireGuard VPN, EasyMesh Ethernet Backhaul, IoT Network, Speed Limit,and More If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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Re:Archer C80 unbelievably low speed
2021-12-04 17:39:21

@nyonyo 

 

If you are only getting 300mbps connection from this router then likely you are connected to the 2.4ghz range.   The cause of this is quite possibly the WiFi card in your Laptop / PC

 

Check that the PC / Laptop can support 5ghz and if so force it to use this, 2.4ghz is very congested in most situations and will reduce performance.  5ghz connections should be 866mbps or 1300 mbps

 

Also worth noting that the WiFi speed is not an indication of the "quickness" of the connection, take this with a massive amount of suspicion...   Also what speed is your internet?   If you ISP is only giving you 50 / 80mbps then 150mbps WiFi is more than sufficient to cover that

 

 

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Re:Archer C80 unbelievably low speed
2021-12-05 03:27:44

@nyonyo 

"If you are only getting 300mbps connection from this router then likely you are connected to the 2.4ghz range"

 

Yes, I knew that all along, my adapter only supports up to 300Mbps, TL-WN821N, but again again and again, why I only get 144Mbps transmit and 300Mbps receive from Archer C80? My modem/router from ISP gives me, 300Mbps both transmit and receive

 

"Also worth noting that the WiFi speed is not an indication of the "quickness" of the connection, take this with a massive amount of suspicion...   Also what speed is your internet?   If you ISP is only giving you 50 / 80mbps then 150mbps WiFi is more than sufficient to cover that"

 

Again I never complain about the internet speed in my post, my contract is only 20Mbps, and I still get full +/-20Mbps around the house with this tiny weeny pity 144Mbps, my question is, why it only transmits 144Mbps?

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Re:Archer C80 unbelievably low speed
2021-12-05 03:46:51
BTW that tiny weeny 144Mbps CAN NOT deliver full 40Mbps (only 20 something) internet speed in my other house, another weird thing is, setting the transmit power to High and Middle give the same 144Mbps, while Low only transmit 7Mbps
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Re:Archer C80 unbelievably low speed
2021-12-05 17:30:03 - last edited 2021-12-05 17:32:45

@nyonyo 

 

I think you may be missing the point here..  link speed is completely fictional and doesn't give any reason to think that A is better / faster than B, let me try and explain more..

 

However in answer to your question, its likely channel width.    2.4ghz is limited to 11 channels and only 3x that wont interfere with each other (1 6 and 11).   This is based on 20mhz channel widths and will give you ~150mbps.  To get 300mbps you will need to increase the width of your channels to 40mhz, but this comes with added interference.  

 

There are quite a few good reasons to keep 2.4ghz on the 20mhz (150mbps) channel widths and this is selected by the Archer if you choose AUTO for the channel width.    Each vendor device will check the airspace and select what it feels is best for the situation, in this case the Archer is selecting 20mhz, the ISP 40mhz.   I have seen MANY occasion where 40mhz says its connected at 300mbps, but switching to 20mhz at 150mbps actually offers far better performance. 

 

If you choose 20mhz channel, its likely you can slip in amongst the other devices in the airspace (your neighbours), minimal overlap, minimal interference.  Say it selects channel 1, then only 2 and 3 can interfere with you.   If you force 40mhz channels, I can near guarantee it wont get 40mhz of space to use and interference will increase massively, you will need to choose channels 3-9 which means you get an interface from the ENTIRE 11 channels.   The end result a GOOD 150mbps is better than a poor 300mbps.

 

Ultimately it is your call, but you would need to test this to see what is best for you.

 

If you want the full 300 WiFi force 40mhz channels and that should sort it for you.

 

IMHO however, get a basic 5ghz card for $15 and use it instead, you paid for a decent router you may as well invest in a good WiFi card to use it.

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Re:Archer C80 unbelievably low speed
2021-12-05 23:25:53
Ok, I do plan to get 5GHz adapter, thanks a lot
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Re:Archer C80 unbelievably low speed
2021-12-05 23:32:44
BTW, what is the normal and acceptable link speed when I use 5GHz AC1300 adapter (Archer T4U)?
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Re:Archer C80 unbelievably low speed
2021-12-06 06:38:33

@Philbert 

I've got Archer T4U AC1300, but instead of solving the problem my big disappointment continues and multiplies...

while WN821N shows receive/transmit

300/270Mbps on ISP router

and 300/144 on Archer C80

My brand new Archer T4U shows even more surprising results,

receive/transmit for ISP router is 54/270Mbps

and for Archer C80 54/173Mbps (2.4GHz) and 54/867Mbps (5GHz)

This is very disappointing, what's the explanation for this?

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Re:Archer C80 unbelievably low speed
2021-12-07 06:35:16

@nyonyo 

 

Hello, are you talking about the send and receive packets when you are mentioning 54/173Mbps (2.4GHz) and 54/867Mbps (5GHz)? What is the link speed when connecting to the 2.4G or 5G network? You can follow this guide to verify the link speed:

https://www.tp-link.com/support/faq/2265/

 

How about other devices, what is the speed when you connect them to the wireless of the Archer C80 network? Are they normal? If only this Archer T2U runs abnormal, please check and update the driver version as follows, then confirm:

https://community.tp-link.com/en/home/forum/topic/509006

 

Meanwhile, please check and update the Archer C80 firmware to the latest as well.

 

 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer AX55V2 Supports WireGuard VPN, EasyMesh Ethernet Backhaul, IoT Network, Speed Limit,and More If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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Re:Archer C80 unbelievably low speed-Solution
2021-12-07 11:01:05 - last edited 2021-12-09 06:30:21

@Kevin_Z 

Yes, something like that, but I Checked them through another way (wifi-properties), and double-checked them with command prompt>netsh wlan show interface, the problem has been resolved after a friend of mine told me to change the channel width from auto to 40MHz in 2.4GHz and 80MHz in 5GHz. But the question is, why the default setting gives very poor signals?  

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Re:Archer C80 unbelievably low speed-Solution
2021-12-08 10:12:08 - last edited 2021-12-09 06:30:24

@nyonyo 

 

Hello, channel width basically controls how broad the signal is for transferring data, which dictates how much data can pass through and at what speed, the wider channels are usually associated with more data transferred at faster speeds.

 

For more details about 802.11 wireless rate/speed concerns, please visit https://community.tp-link.com/en/home/stories/detail/317.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer AX55V2 Supports WireGuard VPN, EasyMesh Ethernet Backhaul, IoT Network, Speed Limit,and More If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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