Client graphics settings

Use this policy to control the quality of graphics presented by remote applications or desktops. Lower quality graphics can help to improve the user experience when there is restricted bandwidth available.

Color depth:

This specifies the preferred color depth for a session. In general, low color depths give better performance over low bandwidth; however some of the compression technologies available can only be used with full color, so the effective performance depends on the individual application and usage pattern. The server may choose not to honor the color depth setting chosen because higher color depths result in heavy memory usage on the servers.


Disk-based caching:

For client devices with limited RAM, better compression rates can be achieved by saving temporary graphics objects to the disk cache.


Lossy compression:

For maximum compression and responsiveness, the server will sometimes allow the transfered image data to degrade in quality. This usually occurs when the connection is slow, or bandwidth is limited and large area updates are taking place. This is not appropriate for all applications and usages. Clearing this setting forces all image data to be transmitted at full quality.


HDX 3D browser acceleration:

This feature allows images being displayed by Microsoft Internet Explorer to be specially handled by the HDX 3D Browser Acceleration virtual channel. This improves responsiveness when using Microsoft Internet Explorer remotely.


HDX 3D browser acceleration lossy compression:

This is an extension to the HDX 3D browser acceleration setting, allowing images displayed by Microsoft Internet Explorer to be degraded before transmission to the client. This is not appropriate for all applications and usages. Clearing this option forces all Web browser image data to be transmitted at full quality.


Remote Video:

The remote video option allows the server to directly stream certain video data to the client. This provides better performance than decompressing and recompressing video data on the computer running Citrix XenApp.


SpeedScreen Latency Reduction:

Enabling SpeedScreen Latency Reduction settings allows the client to predict how mouse movement and text entry will appear on the server. This results in the user getting immediate feedback when typing or moving the mouse pointer.

Supported on: ADMX Migrator encountered a policy that does not have a supportedOn value.
Color depth


  1. 16-bit color
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
    Value NameDesiredColor
    Value TypeREG_SZ
    Value4
  2. 32-bit color
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
    Value NameDesiredColor
    Value TypeREG_SZ
    Value8

Disk-based caching
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
Value NamePersistentCacheEnabled
Value TypeREG_SZ
Default Valuefalse
True Valuetrue
False Valuefalse
Lossy compression
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
Value NameSpeedScreenIA
Value TypeREG_SZ
Default Value*
True Value*
False Valuefalse
HDX 3D Browser Acceleration
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
Value NameSpeedScreenBA
Value TypeREG_SZ
Default Value*
True Value*
False Valuefalse
HDX 3D Browser Acceleration - lossy compression
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Thinwire Graphics
Value NameSpeedScreenBACompressionEnabled
Value TypeREG_SZ
Default Value*
True Value*
False Valuefalse
Remote video
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Multimedia
Value NameSpeedScreenMMA
Value TypeREG_SZ
Default Value*
True Value*
False Valuefalse
SpeedScreen Latency Reduction - keyboard local echo
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Zero Latency
Value NameZLKeyboardMode
Value TypeREG_SZ
Default Value2,1,0
True Value2,1,0
False Value0
SpeedScreen Latency Reduction - mouse pointer prediction
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Zero Latency
Value NameZLMouseMode
Value TypeREG_SZ
Default Value2,1,0
True Value2,1,0
False Value0

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Administrative Templates (Computers)