This is probably an extreme noob question, but I am trying to create billowy smoke for a rocket launch sequence. I imagine it to be simple for an experienced Houdini visual fx artist, but I am very very new to Houdini and am having trouble with a couple of things. My renders come out super blocky and low-detail for some reason. I'm sort of in a desperate situation where I just need some detailed billowy smoke flowing out one source, as seen in a standard rocket/shuttle launch. Can anyone assist me with this? Any help/wisdom/knowledge is much appreciated, and I apologize for such a beginner question. Attached is the project file of the volcano preset I tried to transform into the billowy smoke.

I'm pretty sure your problem is the division size parameter on the pyro node in the AutoDopNetwork. Pyro and smoke effects have a default division size of .2. You increased the value to 1, probably for ease of playback. Unfortunately this has a drastic effect on both the movement of the simulation, as well as the appearance. I changed the value to .2, and the effect was a lot better. Experiment with these values to find one that works for you.

Cheers