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6 Posts

05-02-2019

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Legion Y740 Slow Wireless speed

2019-05-02, 23:12 PM

I just got my y740 about two days ago, everything seemed fine until i tried downloading games. Immediately, I noticed that under the same wifi network same router same distance I get slower speed than other devices. (Download speed is around 10-13 Mbps, where my other devices are at about 45-55 Mbps)

Here is what I have tried:

  • Uninstall with Killer wireless tool, only leaving the killer driver. Still slow speed

  • Uninstalling the killer wireless and its driver, installing the intel driver (Intel 9560 equivalent), no luck, still slow speed

  • Uninstalling all killer driver and software, redownload and install the latest from killer website. No luck, still slow speed

  • Tried changing power plans, wifi channel, 2.4ghz and 5ghz. Nope no luck, no matter what it's always slower.

  • Did a complete reset of the windows, deleting all files and going back to the original state (not much files tbh, ionly installed steam so not a big difference made)

But I did find something very very weird. During the first 2 minutes after startup, the wirless speed actually acts very normally, reaching about 55-60 mbps download. But after about 2 mins, it just goes back to 12-13 mbps again. But my computer is clean, it only has steam that I just installed. I even tried doing safe mode with networking but it ends up in the same situation, good at the beginning and then slow speed afterwards. I do not understand what is going on, this is just too weird (the fact that during first couple minutes after start up has a faster download speed shows that the wifi card is capable of faster speed but for some reason its refusing to do so). Do I have a faulty wireless card or is everyone experiencing a similar issue (where their download speed is somewhat slower than other devices)? Please help! Thanks!

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223 Posts

08-02-2018

PH

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Re: Legion Y740 Slow Wireless speed

2019-05-08, 14:05 PM

Hi Lightning1115,

 

Welcome to the Community Forums!

 

Let's try these steps:

1. Set the power plan to High Performance and uncheck the “Allow the computer to turn off this device to save power” from the wireless card properties in Device Manager.

 

2. Use Lenovo Vantage app to ensure the system is fully updated (BIOS, drivers, etc.)


https://www.microsoft.com/en-us/p/lenovo-vantage/9wzdncrfj4mv

 

3. Under the Intel Killer Wireless AC 1150 properties, look for the following options (if applicable) and set the settings respectively:

Unscheduled Automatic Power Save Delivery (U-APSD) = Disabled
Dynamic MIMO Power Save = Disabled
WMM Power Save (WMM-PS) = Disabled
Power Save Multi-Poll (PSMP) = Disabled

 

4. If same problem remains, try disabling Wi-Fi Multimedia (WMM) on the Wireless card properties then observe.

 

5. If same issue, move the computer close to the router & test the speed. If it’s ok, gradually move to the place where you normally use the computer to see if there’s any attenuation or signal issue coming from the router to the computer.

 

6. Check if the router supports beamforming. If yes, enable it and observe.

 

Let us know how things go.

 



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2 Posts

06-29-2019

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  • Message 3 of 11

Re: Legion Y740 Slow Wireless speed

2019-07-05, 22:35 PM

Hello, can youb tell what worked for you, as I am having the same problems and if necessary return it as soon as possible.

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6 Posts

05-02-2019

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Re: Legion Y740 Slow Wireless speed

2019-07-06, 2:22 AM
I tried all these but they do not work... And now from reddit and other forum I see more people with similar issues but without a solution. Is it possible to be a driver issue? But I tried both intel and killer driver but they dont help
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6 Posts

05-02-2019

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Re: Legion Y740 Slow Wireless speed

2019-07-06, 2:24 AM
Nothing worked. Now I am just reconnecting my wifi everytime I try to download something. My base wifi speed now is very fast so even with reduction I am okay for everyday use. But still it kind of is annoying. I did not return because I am traveling for these months so I have no choice but to keep it. Lenovo does not seem to be helpful on this issue so far
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1 Posts

05-07-2015

US

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  • Message 6 of 11

Re: Legion Y740 Slow Wireless speed

2019-11-18, 13:53 PM

neaarly identical problems with my y740 and killer wireless------------that stuff killed me 2!

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1 Posts

05-07-2015

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  • Message 7 of 11

Re: Legion Y740 Slow Wireless speed

2020-01-20, 11:15 AM

SAME PROBLEMS Y740, identical issues, 2 SEPERATE Spectrun wifi systems

-works perfect with all other phones and equipment an 3 laptops... 

 Is Lenovo ever gonna admit KILLER WIFI is crap,

and give us a good SWAP n' FIX??? maybe a nice, steady INTEL PROSET wifi?

 cause I am about ta HAMMER A LEGION!

Triphik@gmail.com

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7 Posts

02-21-2020

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Re:Legion Y740 Slow Wireless speed

2020-03-07, 3:08 AM

I tried all the above still no luck.

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1 Posts

11-18-2014

India

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  • Message 9 of 11

Re:Legion Y740 Slow Wireless speed

2020-03-14, 16:50 PM

I think it could be caused by the Rivet Software Component and the Rivet Extension drivers which either install by the driver suite itself or afterwards through windows update.

 

Here is what I did, I think it solved my problem (for now). 

 

  • Download the KillerSoftwareUninstaller, the Inf-driver-package and the wushowhide tool
  • Uninstall all Killer software with the uninstaller and reboot
  • Install the inf driver-package through device manager
  • run wushowhide and hide the Rivet Extension and Software Component updates to prevent them from installing.

 

Where I live I only get a bit under 20 MBits but after those two drivers installed, it cut my download speeds almost by half. Tell me if that worked for you too.

 

Eric

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1 Posts

07-04-2020

IL

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  • Message 10 of 11

Re:Legion Y740 Slow Wireless speed

2020-07-04, 18:59 PM

Hi

I have a similar issue, my whole (older) laptops at home connected to my 5Ghz Wifi, download from my NAS at 60mbps, and only my Y740 17, with the "killer" (that kills me meanwhile) is super slow, around 17-18mbps, no matter what I tried.

 

any solution?

 

thanks

Daniel

 

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