hi,
i will post into a proper subforum for a change.
just a quick info regarding material behaviour:
after i add a noise node and connect it to roughness for example, after i disconnect it and add another noise node, the actual first node is again strangely active.
although i have this second node piped in, no changes in it are registered, and instead if i tweak the first, disconnected node, those changes apply.
hope it makes sense.