If the wireless transmission is much slower than the wired transmission, the possible reason is: the wireless network card signal is not good or someone is rubbing the network.
1, wireless card signal is not good
If it is wireless transmission, there is a problem of signal attenuation and hot spot signal strength caused by an obstacle. The router has limited transmission power and can only receive data normally in the room. If the partition wall or the interval is far away, the transmission speed will be slow because the signal is not good. In contrast, the attenuation of network cables is much weaker.