Make your wifi fast again! Diagnose whether your internet connection is slow or your wifi is being problematic. This video details what is fast wifi, how to make sure its not a simple installation issue and how to check if you're getting high data rates or just a lousy signal. Its a brief overview for beginners that introduces topics such as QAM values and RSSI and the db scale. This also determines how certain materials behave to different wifi signals and the differences between 2.4ghz and 5ghz wifi. Also determine if your neighbors or other devices are interfering with your wifi signal causing slowdowns. Interference is the enemy to a wifi signal and will cause re-transmits and discards to the signal causing you to lose precious airtime that could be used for sending data and not waiting for a poorly performing connection to try to send its data through. Lastly, we look into mesh networking and how they work and if they are the golden key to fixing all wifi issues and what its limits are.