I open 3d Coat and create a simple scene where I increased the voxel amount to 8X, save it and open the save file again. I can't seem to open the file and it started to crash. I am using a 2015 Mac, 3.3 GHz Intel Core i5, 32 GB and AMD Radeon R9. I am not sure what the problem is. 3D Coat is always slow as well when I use the cut tools or it is slow overall. I know it is not because of my computer.