How to optimize Flash content playback in vSpace Pro?

The vSpace Pro Enterprise Edition comes with enhanced audio protocols for the L-series and RX-series thin clients to provide better audio delivery including website video content and flash video content.

You will need to install the latest vSpace Pro Enterprise Edition (version 12.3.1 or newer), along with the latest L-series firmware (1.15.8 or newer) and RX300 firmware (3.8.1 or newer).

(a) In the case if the user still experiences interrupted and/or distorted audio quality during rich-content playback (e.g. Flash content), please refer to the instruction below to modify the registry key value to further improve the audio quality:

Add the variable “PollingTimeout” in the “HKLM\SYSTEM\CurrentControl Set\Control\MultiUser" key in the registry.
1.    By default, “PollingTimeout” is set at 20 milliseconds.
2.    Increase this value to 40 milliseconds to check for audio quality improvement.
3.    If further audio quality improvement is needed, increase this value to a maximum of 60 milliseconds without affecting the user experience.

Note: The “PollingTimeout” registry value needs to be in 32-bit D-word value. The value is represented in milliseconds (i.e. 1000 = 1 second)

(b) In the case if the user wants to revert back to the previous audio protocol used in vSpace Pro 10.x or 11.x for their L-series, M-series or MX-series thin client, please follow the instructions below:

1.    To revert L-series thin client audio protocol to the previous vSpace Pro 10.x or 11.x method:
HKLM\SYSTEM\CurrentControlSet\Control\Multiuser\VDM\LVAudio\AudioL300
Change the “_Protocol Id” from “1” (new protocol) to “0” (legacy protocol)
2.    To revert M-series thin client audio protocol to the previous vSpace Pro 10.x or 11.x method:
Change the “_Protocol Id” from “1” (new protocol) to “0” (legacy protocol)
3.    To revert MX-series thin client audio protocol to the previous vSpace Pro 10.x or 11.x method:
HKLM\SYSTEM\CurrentControlSet\Control\Multiuser\VDM\LVAudio\AudioMX100
Change the “_Protocol Id” from “1” (new protocol) to “0” (legacy protocol)

HKLM\SYSTEM\CurrentControlSet\Control\Multiuser\VDM\LVAudio\AudioM300