User's Guide

Chapter 3. Network Considerations
22 PCoIP System User’s Guide
 Screen updates
 Mouse and keyboard responsiveness
 Video streaming quality including pixilation and blocking
 Mass storage (USB thumb drive) responsiveness
3.3 User Experience
Figure 11. Latency and user experience
The figure above shows that acceptable performance is around 17 milliseconds latency (34
milliseconds round trip). The point where users can perceive a delay is 12 milliseconds (24
milliseconds round trip).
At 35 milliseconds, users will like have difficulty controlling mouse devices. Slowing down the
mouse tracking rate can help.
For video performance, the limit at which latency has an effect is around 200 milliseconds.
Latency: Under 20 milliseconds, users should not notice performance degradation. When latency
rises above 20 milliseconds, users typically notice latency. User typically find a latency of 35
milliseconds unacceptable.