Redvale pathing consistency

Been practicing fast campaign clears since .2, mostly act1 so far as that seems the hardest to get right and it sets up the run.


Redvale though...i have not been able to find a consistent method for traversing the zone fast. The layout rules seems to change on a weekly basis so i am never able to find a good path that always works. I did have a decent idea of where obs would be in relation to each other but at the moment nothing is working.


Any ideas on a fast redvale? and what to look for to find obs more consistently.
Cheers