As I started playing with it, I noticed that all my software updates and downloads were taking a long time to finish. I am paying for a 12 mbps high-speed internet connection with AT&T Uverse, but a speed test (www.speedtest.net) proved that I was only getting up to 4 mbps.
I did the same test on my iPhone and it yielded 10 mbps.
I did the same test on my PC and it yielded the max speed, 12 mbps.
Long story short, I fixed it by changing the Wifi Channel from 1 to 6.
If you are experiencing the same issue, you have to log into your router and change it as well.
First, you need to find the IP of your router. Open Network Preferences
Click Advanced and click on the TCP/IP tab
Keep Note of the Router IP. In my case, it is 192.168.1.254
The next step will vary from router to router.
You will have to log into your router and change the Wifi settings.
Open up a browser and enter in http://<IP of your router>. In my case, I would enter http://192.168.1.254
In most cases you will have to log in with a username and password. You should know this, but in case you don’t, try admin/admin, or just admin with no password. If you are an AT&T customer, the password should be the same as the network code on the label.
Scroll down and find the Wireless link. If you don’t see this, look for an option to configure your wireless settings.
Once you are there, change the wireless channel from ‘Auto’ to something else. I selected 6 and it worked for me.