You can enable the VMware Blast display protocol to use an encoding approach called progressive build, or build-to-lossless. This 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.
To enable lossless compression for VMware Blast, set the EncoderBuildToPNG key to 1 in the HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.\VMware Blast\Config folder in the Windows registry on the agent machine. The default value is 0 (disabled), which means the codec does not build to PNG, which is a lossless format.
Configuration changes to the EncoderBuildToPNG key take place immediately.