Raritan dominion kx III Administrator's Manual page 321

In practice, the bandwidth used when an audio device connects to a
target is higher due to the keyboard and video data consumed when
opening and using an audio application on the target.
A general recommendation is to have at least a 1.5MB connection before
running playback and capture.
However, high video-content, full-color connections using high-target
screen resolutions consume much more bandwidth and impact the
quality of the audio considerably.
To help mitigate quality degeneration, there are a number of
recommended client settings that reduce the impact of video on audio
quality at lower bandwidths:

Connect audio playback at the lower quality formats. The impact of
video consuming bandwidth is much less notable at 11k connections
than at 44k

Set the connection speed under Connection Properties to a value
that best matches the client to server connection

Under Connection Properties, set the color depth to as low a value
as possible. Reducing the color depth to 8 bit color considerably
reduces the bandwidth consumed

Set Smoothing, to High. This will improve the appearance of the
target video by reducing displayed video noise

Under Video settings, set the Noise Filter to its highest setting of 7
(highest value) so less bandwidth is used for target screen changes
Chapter 7: Virtual KVM Client (VKC and VKCs) Help
309