So, you might think this, but it’s been stated that the position and order of the jobs being run (as in the traveling salesman problem) saves a surprisingly little amount of time.
What nesting software might save is prep time. Rather than placing your pieces by hand, nesting software might be a good time saver. Ymmv, but I don’t think using deepnest has really taken off in the GF community, probably because it’s not quite as useful or reliable as you’d like.
Others may chime in and prove me wrong, maybe there’s an underground of deepnest users out there. I just can’t say I’ve seen much beyond people saying they tried it and “eh”.