2012 MacBook pro wifi is slower than dial-up. When I download something it barely peaks over 5/6kbps

Hold down the option key and select the Wi-Fi menu in the menu bar. What values are shown for the following?

PHY Mode

Channel

Security

Signal/Noise or RSSI

Transmit (or Tx) Rate

Please do not post the BSSID, as that information is private.

Now hold down the option key again and select

 ▹ System Information... ▹ Network ▹ Wi-Fi

Compare the two-letter Country Code with the ISO code for your country. Does it match? The code X0 means that the country couldn't be determined. The code X3 means South America, not otherwise specified.

that's annoying. you could go into airport and see what the channel is on your wifi, transmission speed, etc, and if it's 2.4 or 5Ghz. Please be aware that wifi signals are affected by what they have to travel through-lots of concrete and steel might slow 'em down. you could buy an Airport express or Extreme and extend the wireless signal. It may work with non-Apple wifi routers as well, but I've found that the airport stuff is the easiest to configure and figure out when stuff doesn't work like it should. You can also buy a wireless extender that plugs straight into the wall. Other than that, try repairing permissions in Disk Utility and zapping pram. shut down your MBP, hold down Command, Option, P and R Keys, then press power to reboot. keep holding down the command, Option,P and R keys for 3 "bongs" then let go , allow the computer to keep booting up. Hopefully that fixes something. Maybe your roommates have 802.111 ac?? I don't know.... You can also get a powerline adapter that comes in 2 parts. 1st gets connected to the router, 2nd gets connected to the wall power and sends wifi over power line in wall. also, for security try wpa 2, not wpa..and in case you're wondering, Yosemite 10.10 introduced a wifi bug, 10.10.4 fixed that bug

hope something helped

John B

Please check the speed of your connection on this site.

Then start up in Recovery mode. In the OS X Utilities screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. Check again. Then restart as usual and post the results.