Wifi is very slow with El capitan

• After upgrading to EL capitan, you may have found that your Wi-Fi is very slow. El Capitan may be struggling with your Wi-Fi settings. Apple has released updates to try and improve this problem, so first check for any updates to OS X and see if you can download a solution. Go to the Apple menu, and select Software Update… to see if there are any currently released updates for your system (Yosemite will also remind you about this via alerts).

• If this doesn’t work, check your router. Check to see if your router needs any firmware updates and download them if available. Visit your router manufacturer website to look for firmware and follow the instructions on their sit.

• Reboot your router to see if this solves the problem. Unplug your router completely or use your router reset button for this. Leave the router off for about 30 seconds before restarting it.

• If it does not work, try deleting your old router settings and setting up a new network via El Capitan. Visit your System Preferences, go to Network, select Advanced, and under the Wi-Fi tab delete your preferred networks, turn your Wi-Fi off, then turn it back on again. Set up a new connection to see if this helps.

• It is also possible for your Wi-Fi to be experiencing interference. If you have a dual-band router, set it to the 5GHz band on your computer to see if this helps.