Can network configuration influence video performance at the terminals?

This is most probably caused by insufficient network bandwidth.

For excellent video performance for zero clients like vCloudPoint S100, the minimum network configuration for hosts, switch, and Ethernet cable should be standard 100M, and recommended to be 1000M for hosts, switch,

principal switch connected cable, and 100M for zero client connected cable.

To know more about the Network Requirement for vCloudPoint zero clients, read the article: Network– an important aspect of zero client performance at the Knowledge Base beblow.