"Making sure the TV has enough room and is at the ideal viewing distance is essential. Remember that when seated, the TV height should be at eye level when setting it up."
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Ideal Viewing Distances
A 65-inch TV should be viewed from a distance of about 2.5 metres. You can appreciate the picture quality at this distance, with the image not appearing pixelated. The resolution of the TV will determine how far this is.
You can get closer to a 4K TV thanks to the higher resolution. Still, the image will be distinct and clear. The size of the room may also impact the viewing distance. Sitting sufficiently far from a large TV in a small space might not be possible.
A less-than-ideal viewing experience might result from this.