Clipping on UniformGrid (Color errors)

So i’m coming here because i’m actually working on performance enhancement, and i’m now asked to add clipping to my uniformgrid exampls, but i’m facing two problems, if i use the raw grid and vtkClipDataSet i have my color but it’s really slow to render and everytime i slide my ClippingPlane it freezes before rendering properly. I also tried the other vtkClipPolydata whith a geometryfilter, but even if it keepos the colors, the surface isn’t closed and i need it closed, so i tried the latest, vtkClipClosedSurface now i’ve got the right behaviour, the right speed render time, but the colors disappeared, has someone any solution? Or is there some way to keep the color even with VtkClipClosedSurface?
Thanks for any answer