I've been facing a very strange problem for last 2 months. I have a 4Mbps internet connection and its wifi works perfectly on all the devices (iphone, Galaxy Tab, Galaxy s4 etc ) but when I switch on my laptop, internet works fine for sometime like 10-15 mints , after that the whole network speed drops tremendously (ping rate goes higher and internet speed drops down to 0.5-1 mbps) and i would not be able to get good speed in any of my devices as if it has affected the whole wifi network. I use Netspeedtest app on my iphone to observe the whole scenario. And when i switch off my laptop's wifi, internet speed comes back to normal in a matter of few minutes.
What I have tried so far:
1) Tried ethernet cable, problem was still there meaning there was nothing wrong with my WLAN card.
2) Also tried a different browser, no improvement. Though i use google chrome normally.
I posted this problem here 2 weeks ago and initially we thought it was virus/malware which was causing this problem, then with the help of computing.net experts, i have got my computer all cleaned up. Now there is no virus but the problem is still there. So the helper asked me re post the problem with networking experts and see if any of those could help me out of this problem.
Any sort of help would be greatly appreciated. Thanks in advance.