The Speakers placement
The “correct” speakers placement in your HT can make a good sounding content great. While I am not very familiar with how to calculate the placement and where to place the speakers for a great sounding Atmos setup, I am investing some time in learning the tricks of the trade.
It is amazing to see how so many people in the community have created content on YouTube on the topic. Home Theater Gurus channel in particular has a couple great videos on the speakers placement and how to calculate the position/location: