Myke, you are pointing me to skipobstaclecreation=1, right ?
(Couldn't identify any of the other defined parameters to be possible candidates for the supposed effect).
If I do that, I run into another "interesting" problem, at least with Morning Mountain Stroll.
Right after the starting point, 5-6 steps into the direction that I 'm supposed to go, there seems to be an impassable invisible barrier
which ist not there (or not active) when skipobstaclecreation=0.
Can't detect anything on the map in Editormode that could cause this behaviour. It also seems that the concrete obstacles behind which the two first soldiers are hiding are not shown and also not there , since the soldiers eventually come running and firing at me. Both of the soldiers are fully visible,too. while they are standing where they usually hide when skipobstaclecreation=0.
I hope wizard of id may join in here, too, maybe, he knows why this happens with his map.
EDIT:
Nevertheless, I return to skipobstaclecreation=0 for good, some things are just the way they are.
Lives of great men all remind us we may make our lives sublime