Wireless latency (lag spikes)

[george__]

I get random latency on my wireless connection. Now I'll go into a bit more detail.

Here is what happens when I ping my router:

It honestly seems completly random. It can be fine for 2 hours then all of a sudden it starts to go wrong. Generally it seems to spike to a high ms / delay every X seconds for a while. Usually around 200ms although it has gone up to 10000 once before. Its hard for me to be specific as it seems very random.

Here are some things that might help you determine the problem.

- Other devices in the same position as my PC do not have this problem

- Heated computer doesn't seem to affect the randomness of the ping

- No packets are lost, just delayed

- My router is on channel 6, no other routers in the area are on this channel

- I still get the problem when using safe mode with networking (so I presume not services causing problem)

- I have the latest driver from TP link (TL-WDN4800_Driver_V1_140506), I have also tried their older versions & a couple of versions from an atheros website

https://www.atheros.cz/atheros-wireless-download.php?chipset=65&system=5

http://www.tp-link.com/en/support/download/?model=TL-WDN4800&version=V1#tbl_a

- I use a wireless Keyboard (although I still get the problem when it's turned off)

- I have Nagle's algorithm disabled & use "TcpAckFrequency" and "TCPNoDelay" in registry (although I had this problem before disabling Nagle's algorithm)

My best bet is that it could be a problem with the driver / drivers clashing? Or possible a driver that the wireless keyboard uses clashing? Although I can access my router, it doesn't have a 5ghz only option I can find (wanted to test if interference on 2.4hz) I've been struggling to find the solution to this problem for ages now & I can't play games or sometimes even have problems with browsing the web / streaming. Please bear with me as I don't know alot about networks, sorry.

OS: Windows 7 Ultimate 64-bit (sp1)

Network Adapter: TL-WDN4800

Chipset: Atheros AR9380

8 devices currently connected & working great at this moment. (usually 10 max, not a busy network to be honest)

EDIT: I use an SSD to boot, set up so files & %appdata% etc are on a HDD. Just thought this could be a factor

My ISP is sky & I have fibre optic internet.
Router is by Sky model: SR102

motherboard is by ASUS, I think a z97? will look when I turn pc off.

Not sure about power supply.

PC was custom built from a professional website.

Thankyou for any help! There are a couple images below that I presumed people might ask to see.

Thanks again

ipconfig /all:

Network scan:

 

[TheDualshock]

The spikes caused from pinging to your router is caused by some kind of interference with your wireless signal from the TP-Link adapter and your router. Could you test with a wired connection to see if that helps?

 

[george__]

The spikes caused from pinging to your router is caused by some kind of interference with your wireless signal from the TP-Link adapter and your router. Could you test with a wired connection to see if that helps?

Hi, I've tested with an Ethernet cable before I moved out & it was fine. The thing that makes me think it may be a different problem is that no other devices I have in my room get this same problem? (same problem in my old house aswell, but my laptop & mobile seem fine) However I do agree that it seems like interference. The problem is I can't use a wired connection 24-7 as its very impractical. What would you recommend I can do to further diagnose the problem?

I'm in the process of getting a new wired keyboard anyway which should reduce some interference. Anything else I can do to figure out what the interference is? We don't have a home phone or use the microwave often.

Thanks very much for helping me Dual, I really appreciate it

 

[TheDualshock]

It could simply be the signal strength or the surrounding area interfering with it (e.g. walls). By other devices, do you mean cellphones, laptops etc.? If you can, try the adapter using a laptop or another computer in the same room to see if you still have an issue. You can always try moving your computer nearer to the router and test if you are still getting spikes.