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I got some problems with my WiFi adapter under Ubuntu 14.04. When I want to play games or watch videos from the web, I get frequently spikes and lags. It is annoying. So I pinged myself to see what's wrong and I got this (sometimes the ping is even higher):

Could not upload image directly. So please click on the link

So I read many many forum posts about my adapter and WiFi problems. Most people solved the problem by adding options ath9k nohwcrypt=1 to /etc/modprobe.d/ath9k.conf. But this doesn't work at all for me! I also tried to disable WiFi n for this adapter, but I don't know how to do this.

Please can you help and do you have some advice for me? And please tell me what log file do you need (and the terminal command to get them)

Beschreibung: Kabellose Verbindung
   Produkt: AR9462 Wireless Network Adapter
   Hersteller: Qualcomm Atheros
   Physische ID: 0
   Bus-Informationen: pci@0000:04:00.0
   Logischer Name: wlan0
   Version: 01
   Seriennummer: 48:d2:24:20:f6:3e
   Breite: 64 bits
   Takt: 33MHz
   Fähigkeiten: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
   Konfiguration: broadcast=yes driver=ath9k driverversion=3.13.0-29-generic firmware=N/A ip=192.168.1.23 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
   Ressourcen: irq:18 memory:b3500000-b357ffff memory:9ff00000-9ff0ffff

Thank you

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