I've reached the vertex number limitation and I know that there is a way to bypass it, I've installed Crak0kalos StudioMDL but it didn't work and it made stretched vertex.
Additionnaly I've also tried to use decimate modifier from blender to lower the number of vertex, but it made some holes in the mesh, so i'm looking for a way to fill the holes and "clean" the mesh (i've tried the "fill" tool, but it just made it worse)