You can configure the PCoIP display protocol to use an encoding approach called progressive build, or build-to-lossless, which works to provide the optimal overall user experience even under constrained network conditions. This feature is turned off by default.
The build-to-lossless feature provides a highly compressed initial image, called a lossy image, that is then progressively built to a full lossless state. A lossless state means that the image appears with the full fidelity intended.
On a LAN, PCoIP always displays text using lossless compression. If the build-to-lossless feature is turned on, and if available bandwidth per session drops below 1Mbs, PCoIP initially displays a lossy text image and rapidly builds the image to a lossless state. This approach allows the desktop to remain responsive and display the best possible image during varying network conditions, providing an optimal experience for users.
The build-to-lossless feature provides the following characteristics:
Dynamically adjusts image quality
Reduces image quality on congested networks
Maintains responsiveness by reducing screen update latency
Resumes maximum image quality when the network is no longer congested
You can turn on the build-to-lossless feature by disabling the Turn off Build-to-Lossless feature group policy setting. See View PCoIP Session Bandwidth Variables.