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.