Wi-fi speeds on my mac book air

Is the Router broadcasting Wifi in both 2.4 gHz and 5 gHz using the same SSID ? Are you able to determine to which of the presumed 2.4 to 5 bandwidth ? Are there Other Wifi signals interfering with yours? Is there a good Line-of-sight between MBA and Router ?

Many factors come into play.

Does it perform same or better if booted into Safe Mode - Shift - immediately at startup. It will perform a Repair Disk, clear cache files and Only load Apple Software and Fonts so loads slowly - norma. It will look and perform differently - also normal. Keep it this mode for 5 - 7 minutes and Test.

Question- Any AntiVirus, Cleaners, Optimizers, VPN installed? If so read here and suggest removing them as per Developers Instructions. If, No - disregard.

Same here in our home. The computer will usually connect to the Strongest Signal and if moving to new location in the house automatically switch to 2.4 gHz if wall is between computer and Router. The nature of 5 gHz is best with nothing between computer and router. 2.4gHz is better if wall etc between.

Thank you for marking as solved.

Is it possible to get into the Router and see what Type of Security is being used for the Wifi - ( WPA 2 - Encryption AES (CCMP ) is what my router is using and getting Full Speeds

Interesting do keep us updated if it changes