I sometimes get a latency average of ~500ms between my PC and wireless router

[slicksilver]

Anybody knows why this happens? A few minutes or after a while I get 1ms back. This happens to me atleast once in a day and I'm unable to figure out why. At the same time browsing becomes slow and downloads becomes slow. Its not a router problem surely because at the same time the Ipad passes speed tests and latency tests with flying colors. What's wrong with my PC networking? I'm on Win 7 SP1 and my desktop's wireless adapter is the D-Link Wireless 108G DWA-520 Desktop Adapter. My router is the Asus RT-N56U running 3.0.0.4.374_979 FW.

Thanks in advance

 

[jimpz]

Could be any number of issues; your proximity to the router & whats in between (walls, appliances, wiring, etc) wirless devices (phones, baby monitirs, etc) other routers nearby on the same channel, drivers.
Make sure you have the latest driver for your computer, possibly change 'channels' on the router.

 

[slicksilver]

The distance between the PC and the router is less than 10 feet. The only other devices that connect to my router are my mac, iphone and ipad and all of them connect to the 5 ghz network. My desktop's wireless network adapter is old and only connects to the 2.4 ghz network. Its about 6 years old. Never installed a network driver for it. Dlink themselves recommend using the default driver which comes with Win 7. Also there isn't any router close by within or outside the house nearby.

 

[JackMDS]

First step try to connect the computer to the Router via cable an see how it is doing to rule out general network problem.

If you need a new Wireless card.

This card is Dual Band USB with good Antenna that can be put above the system.

http://www.newegg.com/Product/Produc...82E16833166046

 

[slicksilver]

Thank you for the recommendations JackMDS

 

[RadiclDreamer]

My gut feeling would be interference from something temporary such as a microwave oven causing your signal to go to pot, what frequency are you running and how long do these spats of poor performance last?

 

[slicksilver]

Connected on 2.4ghz. Its very intermittent. In a day of continuous usage its happens for a very small window of time( 15 mins or lesser). I didn't do anything and I just checked now and its 1ms and lesser.

Stuff around my PC:

Speakers
Printer
UPS and batteries
Mobile phones

Do have a microwave oven but its one floor down.

 

[dave_the_nerd]

My gut feeling would be interference from something temporary such as a microwave oven causing your signal to go to pot, what frequency are you running and how long do these spats of poor performance last?

This, this, this.

Used to have 2.4 Ghz cordless phones. Network connections would completely drop every time the phone range.

Even 5Ghz will get sketchy when the microwave is running.

 

[dave_the_nerd]

Do have a microwave oven but its one floor down.

Close enough. If you're in an apartment or condo it could also be the neighbors.

 

[riahc3]

Also there isn't any router close by within or outside the house nearby.

Did you go to your neighbor's house and check this yourself?

A important note someone said here is to check if this happens on wire too.

Also update your drivers always. Im surprised D-Link would say to use Microsoft's drivers instead of their own...

 

[slicksilver]

No neighbours around in the radius of 200ft. Independent house in a suburb in India.

 

[s44]

USB3 can also be horrible interference.