2, the network is not stable, the network can not complete the transmission of server information.
3, system problems, system resources are too low, can not provide enough resources for the program to process the server information.
4, the network is too slow, such as the use of BT multi-threaded downloads, online video watching and other large bandwidth-consuming software, if the use of *** enjoy bandwidth but also to guard against others maliciously occupy the broadband.