TL;DR,prims with materials can skyrocket land impact
set ur prim linksets to Convex Hull, then None.
if u NEED the prims to have accurate collision, change individual prims back to the original physics shapeinitially, Land Impact = Prim Count
but after playing with the Materials or Physics Shape Type of an object, different calculations will be applied.
in Build Menu, with an Object Selected
find the More Info button > it should be under the Land Impact total
Weights of Selected >
* Download :* Physics :* Server : 0.5 always(?)the largest of these numbers will determine the Land Impact. Physics weight varies based on parameters & scale.
Physics Weight can be a problem, especially in Link Sets, to lower it go to ;
Features >
Physics Shape Type >
Convex Hull or None } this will set all except the Root to NoneConvex Hull does come with its own side-effects.
as an example, if u had a Torus as an Arch, it would no longer be passable with Convex Hull.
Torus with Materials*in this case, u could place an Invisible Hollowed Cylinder without Materials to act as the "Physics Shape" of that Torus.
also, the Land Impact shown outside of the More Info window is not always accurate.