To perform a stable communications, it is recommended that you set the following bit rate to cameras.
1 channel: 20 Mbps or less, 4 channels: 32 Mbps or less in total

The maximum bit rate is 45 Mbps(UDP) in performance. However you should set the average value to the bit rate for camera, so it is recommended that you will design a network with a sufficient margin that allows for a burst size approximately 1.5 times as large as the typical value.