Computers & Electronics

2.4ghz speed much much slower than 5

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  • Feb 29th, 2020 3:09 pm
[OP]
Deal Addict
Jan 3, 2008
1510 posts
233 upvotes

2.4ghz speed much much slower than 5

please help - my wifi at 2.4ghz all of a sudden does not go more than 25MBPS whereas 5ghz is 70MBPS.. what is the problem? I tried to reboot both modem and router but it's the same. I tried changing the channel to a recommended one, still not much difference.. My router is TP-Link AC 1750
54 replies
Sr. Member
Sep 13, 2011
568 posts
258 upvotes
ANJOU
busybe wrote: please help - my wifi at 2.4ghz all of a sudden does not go more than 25MBPS whereas 5ghz is 70MBPS.. what is the problem? I tried to reboot both modem and router but it's the same. I tried changing the channel to a recommended one, still not much difference.. My router is TP-Link AC 1750
are you using 20 or 40 MHz channels ?
[OP]
Deal Addict
Jan 3, 2008
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elgros4 wrote: are you using 20 or 40 MHz channels ?
It's set to auto
Deal Guru
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Feb 24, 2007
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Connect a laptop (ethernet) directly to the modem and perform a speed test to the provider. Who is your provider?
Member
Oct 1, 2009
401 posts
149 upvotes
West coast
Possibly too much interference with other wifi signals. With that said, don't sweat it too much. unless everything is buffering like crazy, the speed should be more than adequate.
Deal Addict
Aug 29, 2011
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Mississauga
Get off wifi and use ethernet for any heavy-duty file transferring.
[OP]
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Jan 3, 2008
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eldiablo wrote: Connect a laptop (ethernet) directly to the modem and perform a speed test to the provider. Who is your provider?
It's carrytel. I will perform test directly connecting to laptop and see..
[OP]
Deal Addict
Jan 3, 2008
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doradxplorer wrote: Possibly too much interference with other wifi signals. With that said, don't sweat it too much. unless everything is buffering like crazy, the speed should be more than adequate.
Ya, IPTV is buffering like crazy and I think it's because of this... Unfortunately the box only supports 2.4ghtz.. and there is no way I can run a wire from router to my ip box.. both in separate rooms.. I updated the firmware, I reset the router.. it may be interference with other wifi signals.. can I check which wifi signals it is interfering with?
Member
Nov 23, 2004
310 posts
408 upvotes
Ontario
It's generally fairly expected that 2.4ghz will not be as fast as 5ghz. If yours suddenly dropped slower, you most likely have some new interference in that band, and there's usually nothing you can do about that. You will never see speeds on 2.4ghz be on par with 5ghz as the two frequencies support vastly different maximum theoretical transfer speeds.

https://www.howtogeek.com/222249/whats- ... d-you-use/
Deal Fanatic
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Jul 7, 2003
6945 posts
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T dot 6
You can get a WiFi analyzer app for your phone and try to identify the least busy channel to switch to.

Here are some for Android:
https://play.google.com/store/apps/deta ... rpro&hl=en
https://play.google.com/store/apps/deta ... tapp&hl=en

Edit: note I am talking about Wifi Control Channel, not Channel bandwidth as discussed above.

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stubhub and clearly.ca suck, like really suck
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Aug 19, 2010
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busybe wrote: It's set to auto
That’s the problem. The channel it’s choosing is probably part of the issue.
Deal Guru
Feb 9, 2006
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Brampton
Jaytee wrote: You can get a WiFi analyzer app for your phone and try to identify the least busy channel to switch to.

Here are some for Android:
https://play.google.com/store/apps/deta ... rpro&hl=en
https://play.google.com/store/apps/deta ... tapp&hl=en

Edit: note I am talking about Wifi Control Channel, not Channel bandwidth as discussed above.

Image
Keeping in mind there's only 3 real channels on 2.4Ghz 1,6,11. And only if you stick to 20mHz.
[OP]
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Jan 3, 2008
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mindabsence wrote: It's generally fairly expected that 2.4ghz will not be as fast as 5ghz. If yours suddenly dropped slower, you most likely have some new interference in that band, and there's usually nothing you can do about that. You will never see speeds on 2.4ghz be on par with 5ghz as the two frequencies support vastly different maximum theoretical transfer speeds.
https://www.howtogeek.com/222249/whats- ... d-you-use/
Yes, understand, but this is a recent development. I have been testing my speed over the years and even at 2.4 ghz I have been getting very decent speed, close to 70mbps. So, something is going on... But thank you for your input.
tebore wrote: Keeping in mind there's only 3 real channels on 2.4Ghz 1,6,11. And only if you stick to 20mHz.
This is helpful. I will try to make these adjustments and see what's happening.
[OP]
Deal Addict
Jan 3, 2008
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Thanks to all for all the pointers. It has helped me take a look at few things.. will post again after I do some testing.. any one suspect my router is an issue? If I am getting good speed at 5 but not at 2.4?

Oh, and I don't know why would someone "down vote" this discussion/question.. :(

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