Air ramps look pretty good
Definitely some breaks in a couple of the spirals, good point out there, could do with touching them up
I keep this one rock at -950 -880 300
"Avoid" marked - I forget why, i think i kept getting stuck on it lol
Huts are pretty good - definitely not as bad as ToFS cubby's on the "out the box" mesh
@Hylander is 100% right about the water tho, i forgot about that, very good point - I always end up just manually pulling around areas with small pools like that.
if you do a
/nav ui in game, and then click on Render Navigation Mesh - you can see, from in game, if there are any breaks on the mesh where you are trying to get to

if you let us know a specific camp/spot we can either help spruce up your mesh (if its a mesh issue) or give some advice for settings and whatnot so you'll be back in action