Despite advice not to, I reset my 'TERRAIN_MAX_VERTEX_LEVEL=' to '19' yet every 2nd time I start the simulator (it is ok each time in between for some reason), I get my airports appearing half submersed in the RBE 20m mesh terrain.
Here are some shots of Ardmore for example:



When I try putting it to 'TERRAIN_MAX_VERTEX_LEVEL=21', I loose the dimples around REAL NZ Wellington International, but get many other airport's runways and taxiways (including Ardmore), sunked in ditches below the terrain.
How can I fix this please?
PS.
I am using the NZAR afcad supplied with the GNZLAP v2, with the flatten edit provided in the readme.



(Don't get me wrong, I love the work these guys been doing - the AI is fantastic!)