You can disable the expand animations when you are using the controls via Remote Desktop. You can do that by setting the ExpandAnimtation property to None:
tree.ExpandAnimation = ExpandAnimation.None;
All the best,
the Telerik team
Q1’11 SP1 of RadControls for WinForms is available for download
; also available is the Q2'11 Roadmap
for Telerik Windows Forms controls.