These steps work well for placing a Wi-Fi Router, but they also help with placing the D60 for the optimal 5G connection as well.
Another way to ensure the best possible placement is to position your D60 towards the nearest cell tower to your home.
Please visit https://www.cellmapper.net/ and select your carrier to locate the direction of your nearest cell tower and then find the best location in your home to follow the above instructions, while still being positioned in the direction of the nearest tower.