I ran internet speed tests via www.speedtest.net and found that my internet speed varies.When connected directly via ethernet I am getting a speed of 70+ MBPS but when connected via Wi-Fi I am getting a speed of 40 MBPS.My WiFi router is DUALBAND Netgear WNDR3400v3 N600 and its placed in the same room where I have my laptop.I've tried both frequencies i.e 2.4ghz and 5ghz and I am getting the same speed.Is there anyway I can get better speed via WiFi connection???