First of all, the speed of 5g at 20mhz is also related to the number of antennas.
1.1 Antenna, up to 86.7mbps
2.2 Antenna, up to 173.4mbps
3.3 antenna, up to 260.1mbps
4.4 antenna, up to 346.8mbps
Therefore, when the number of lines is greater than 2, in a clean environment, it can run up to 200m.