I am just trying to figure out, how to navigate through the preview window ... this might take some while

Honestly, I am rather into multi-level displacements and the effects of patch sizes of Compute Terrain nodes ... this may take some time, as most results are ... not very predictable.
Maybe I am just missing a goal like in those days ,-)
One thing that I am a bit sad of is, that we did not share the contents of our nodes-networks, mostly showed the screens ... there are a lot of settings I lost ... okay, my fault