2.4ghz network very slow in EAP245 and EAP225

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2.4ghz network very slow in EAP245 and EAP225

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
2.4ghz network very slow in EAP245 and EAP225
2.4ghz network very slow in EAP245 and EAP225
2020-05-03 11:17:45 - last edited 2020-05-04 21:13:30
Model: EAP245  
Hardware Version: V3
Firmware Version: Latest

I am wondering if anyone else has the same 2.4ghz wifi network issue, It's extremely slow. 5ghz works fine

 

Speedtest 5ghz : 300 Mbps dwonload, 20 mbps upload 

 

Speedtest 2.4ghz: .1 Mbps download, 2 Mbps upload

 

Latest firmware installed, different channels, I currently have only one 2.4ghz network, no interference with any other wifi network.

 

The same results with a EAP225.

 

Tired of trying everything I set up the original wireless router I had before buying this AP and the 2.4ghz network works way better.

 

Am I missing something ? Anyone can help me before I return this AP

 

Thanks in advance 

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#1
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8 Reply
Re:2.4ghz network very slow in EAP245 and EAP225
2020-06-29 17:11:26

@Hac Yes, there's something wrong with 2.4Ghz.. but it seems TP link dont care about it...

 

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#2
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-06-30 13:46:37 - last edited 2020-06-30 13:57:31

I get normal speeds for 2.4GHz using both EAP225 and EAP245. Some interference from others, but not severe.
North American versions, using latest firmware. I'm using 20MHz only and get ~60Mbps.

PHY rate 217Mbps, RSSI -66, noise -92

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#3
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-06-30 13:54:05

@nojak 

 

Okay, i would really like to know how to achieve that. It's probably just a stupid setting somewhere messing it up

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#4
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-06-30 14:10:10

@blj-74 Here are my 2.4GHz radio settings. I'm using the Omada Software Controller (on a Raspberry Pi) to control these, but that should not matter.

 

Status: Enable

Mode: 802..11b/g/n (mixed)    <- probably the most important setting

Channel Width: 20 MHz

Channel: 6 / 2437 MHz                (i alternate channels 1,6,11 among the APs I have)

Tx Power: Custom

                 6                           (6-24 dBm)

 

That's an EAP245 I just connected to. The other EAPs (245 and 225) are configured similarly, just different channel and Tx Power.

 

 

Just note that 2.4GHz was the original unlicensed spectrum, so everything used it. Cordless home phones, baby monitors, bluetooth, ZigBee, etc. It's a long list.

https://en.wikipedia.org/wiki/2.4_GHz_radio_use

You can have a lot of interference on 2.4GHz without any other wifi around.

 

Try different channels to see if one works better than others. Here just some IoT devices use 2.4GHz channels so we don't care about their speed anyway and we moved all our computers, tablets and phones to 5G. 

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#5
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-06-30 14:27:08
Yeah. I have tried various channels. And there are interference, but my old wifi still performed waaaay better on 2.4ghz. I'm getting under 10 mbit download but upload is fine (50-60 mbit) so it makes no sense.
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#6
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-07-15 02:05:19

@Hac 

 

Same issue, 2.4 is very slow.  5ghz works great.  I think they need to update firmware.  2.4Ghz should also have a longer range but doesn't.   I just bought mine today.  I'll call tech support tomorrow to see if they can help. 

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#7
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Re:2.4ghz network very slow in EAP245 and EAP225
2020-10-07 15:35:24 - last edited 2020-10-07 15:35:49

@Hac @blj-74 @nojak  @Car-man 

 

We're using two EAP225-Outdoor APs with OpenWRT as the firmware in production.

 

You're getting slow speeds becuase 2.4GHz wireless is SoC.

5GHz wireless chip on EAP225 is a Qualcomm QCA9886.

5GHz wireless chip on EAP245 is a Qualcomm QCA9880.

 

Source:

https://github.com/svanheule/openwrt/commit/7b9f80909ace25efa3360af6bddcd64cefb24614

https://github.com/svanheule/openwrt/commit/d4bdbee11b892adc68f72b91a89c8e715582a365

 

I've got an EAP225-Outdoor, I get ~300Mbps on 5GHz, ~5Mbps on 2.4GHz as long as I'm 10 meters away from the AP.

If I stand right next to it I can get up to 100Mbps speed to the iPerf server I host locally.

 

So it's considered a generic 802.11b/g/n wireless controller.

 

I'd use 2.4GHz for IoT devices which don't require much bandwidth to operate and use 5GHz for users to access the internet.

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#8
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Re:2.4ghz network very slow in EAP245 and EAP225
2021-01-19 04:55:25 - last edited 2021-01-19 07:22:17

@Hac @blj-74 @nojak  @Car-man 

 

Same problem, I have 5 EAP245 V3.0 (1 from US and 4 from EU), they all have the same problem!

 

I suffer from very slow internet speed at 2.4GHz other than 5GHz

 

Subscription speed 200Mbps

Cable/Wire = ~200Mbps

Wireless 5GHz = ~155Mbps

Wireless 2.4GHz = ~6Mbps !!!

 

I've tested all channels at 2.4GHz (all 13 channels) and they all give me almost the same result!

 

I tried another router (Linksys WRT1900ACS), it was giving me ~55Mbps at 2.4GHz and 199Mbps at 5GHz.

 

I did everything according to my experience, and I got no positive result!

 

I had never had this problem before until I updated all EAP245. All devices right now have the latest update 5.0.0!

 

PS: I've 9 wireless surveillance cameras, 24 SONOS One SL wireless speakers, and several wireless and Bluetooth devices inside and around the building. I have a big building, I can't use 5GHz everywhere.

 

I gave up trying, I want to help please.

Thank you

 

Edited: I disabled Wi-Fi Multimedia (WMM) and the download speed improved slightly, but the upload speed was reduced.

 

Method: Go to Devices > choose your EAP device > Config > Advanced > and disable Wi-Fi Multimedia (WMM).

 

PS: Don't do that on 5GHz, it will affect the download speed.

 

I know this is not a perfect solution, but nothing we can do while TP-Link's technical support is ignoring our problems!

 

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#9
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