I'm having issues with wi-fi connection on laptop Sony Vaio SWE151C11M with Qualcomm Atheros AR9485WB-EG network card.
My router is TP-Link TL-WR1043ND set up with default setting.
The thing is when i ping 192.168.0.1 I'm getting spikes up to 400ms in let's say 5-10 requests, so quite often. Router is staying straight to computer.
I have updated card drivers, checked computer for viruses and it doesn't help. On ethernet cable problem doesn't exist (<1ms).
The strange thing is on ubuntu booted up from usb stick spikes are rarer but still exist and are lower, up to 50ms.
Do you have any idea?