I finally managed to solve my little issue with the autogen and already stumbled on the next one. It seems that your scenery has some issues when "terrain reflections" is turned on in Prepar3d v3.4, as you can see on the both comparison screenshots here:
"terrain reflections" activated
"terrain reflections" deactivated
As I do not have this issue only with the Flightscene Tahiti scenery, I already got some information about it. A scenery designer explained me, that this is due to the fact that the scenery designer of this specific scenery where the error occurs has not masked enough land mass with water leaving edges under water but still flagged as "land". Is there anything I can do (except turning off the reflections, of course...)? Will there be a patch resolving this issue in close future? Thanks for any hint
Regards
Chris