How can I speed up my wifi connection?

The quickest solution is to ensure you are using 5GHz wireless. Most wifi systems use the 2.4GHz band which is congested by existing traffic and interference, but the 5GHz band is much less populated. However it is worth noting that the speeds quoted are typically for the ideal line rate and not for the actual possible transmission. The fastest sustained feed I have seen from WiFi for a single client is 40Mbit/sec.

The first thing to check is what PHY rate you’re actually connecting to your wifi at. Just because your router advertises that it can do 150Mbps on 802.11n doesn’t mean that you’re actually connecting at that speed.Once you’ve determined your PHY rate, you should see how fast that connection actually performs using a tool like iPerf. It should be somewhere near 70% of your PHY rate. If it’s much lower than that, you’re probably getting a lot of network retries on your link. If your PHY rate is low, you’ve got issues with interference, whether that’s co-channel or adjacent channel interference from another access point, or just merely RF noise on the channel.Also, don’t put much faith in http://Speedtest.net. It’s only meant to give you a rough estimate of the connection speed between your device and their server at that particular moment. It doesn’t distinguish WHERE your performance bottleneck is. It could just as easily be your ISP’s backhaul that is saturated. The quickest way to see if the issue is with your carrier or on your own network is to hook up to your router via an ethernet connection.