The performance is reduced if you use a small feature size for slicing lattices or complex parts which turns out many edges to trace.We suggest editing the feature size to try and find a balance between performance and speed. Feature size is the trade-off between performance vs resolution.If you have areas that are less important, like support structures, try using a high feature size in those areas.Another method is to look at processes further up in your notebook that could be causing or adding to the slow processing times.