Keep your router away from cordless landline phone as they have the same frequencies.
Place your router in an open space away from walls (preferably center of the room).
Place your Wi-Fi router within 7 feet of your PC/ Laptop - no farther.
Make sure background applications are not running on your computer/ devices, as it can affect speed.
Install and update anti-virus on your computer to ensure speed in not compromised.
Limit the number of devices running on your Wi-Fi connection: Less devices = More speed.
Try not to access content outside the country or websites that control the speed of your internet.
Ensure proper and regular maintenance of your Wi-Fi router to ensure consistent performance.