May not be optimal. Compared to the 599 record I had before, the only difference I made in the route was the end. Optimizing the end section is the greatest pipelining challenge I've seen in a PP2 level.
I agree, I spent quite a long time thinking how I could get to the exit... interesting that we are trying to optimize the path at the same time, thanks for the fun :)
I think I haven't found all the optimizations yet since there are so many in this level !
Edit : the changes on he left side and the right side (which looks good for now) are a little efficient :P