It's not normal and I've never seen such problems. The reason could be that Raduga runs with high priority and your mouse software does not like this. Try to set the priority of Raduga to "Normal" using the Windows Task Manager. Let me know if this helps.
do you have also 2.4 Ghz dect phones in the neighbourhood? Because they can cause some problems with radiocontrolled mouses. The Fm- of linktransmitter can also give some problems because they uses radiowaves.