Remote Control - WAN Connections slow

Remote Control - WAN Connections slow

Hi,
Our company has a lot of satellite sites connected to us through vpn tunnels over standard DSL connections.
We have a problem, when using remote control, there is a bit of lag because the colours are quite heavy.
Is it possible, as with VNC, to down scale the amount of colours so the connection is a little snappier? ie 64 colours
Thanks

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