Not sure if anyone has posted this yet but when you pull the switch to bring up the first little walkway, you can reset and the walkway is fully up, will probably save around 2 seconds. Sorry if i explained that bad or if anyone has already posted but just thought i would share.

Talking about the Blue, Orange & Yellow walkways*

I noticed this myself last night. I moved to fast as I have a need for speed and got eaten up by Moreau. Upon respawn I had actually spawned on the other side of the 3 button platforms despite not even making it across them. Seems the trigger for the next load zone is possibly just activating the 3 coloured switches for the platforms. If you time it right and expect it, easily a 5ish second timesave