There exists a grid track at the lowest Plank size upon which the smallest base building blocks ride on / travel, when we "propel" in space, we lost most of the energy in the conversions downward through the emergent quasi particle Plank layers, and the transitions through them.
I.E. the chemical reactions from the spaceships exhaust propellant are too large to make contact with the much smaller Plank bottom layer track.
I believe that a better mix of particle sizes in the ships propellant would "fill the gaps in" when we propel with much more efficiency.
Mixing large size and smaller sizes of molecules/particles in the propellant that we release against the plank layer grid track will give better energy returns.
I am unsure of track alignment cardinality and how that affects travel. Everything is orbiting, and everything being orbited seems to be orbiting something larger, so even determining direction against the grid might be difficult. We could be spinning against it at an incredible rate and not know it because everything else is as well.

Fuck yeah Bismuth