Network delay will cause the required information not to be refreshed, which is also the main reason for the abnormal display.

Network delay refers to the time required for transmission in the transmission medium, that is, the time from the beginning of message entering the network to the beginning of leaving the network. All kinds of data are transmitted in network media through network protocols. If the amount of information is too large, without restriction, too much network traffic will lead to slow device response and network delay.