Removing the partition lines in 3D Paraview plots

Dear FreeFEM community,

I’m plotting the solution generated by parallel FreeFEM code in 3D. The issue I’m facing is the appearance of partition/boundary lines. In parallel FF tutorial, I learnt that using threshold in paraview, and setting min value = 0 (or -111110) in label would fix the issue. But this seems to work only in 2D, but not in 3D. Of course, one can just generate the global vtu files on rank 0 and avoid this problem.

But I’m wondering if anyone knows of any other fix.

Thanks