Disregard the post as it’s back to CTDs.
It's been interesting observing pilots on Vatspy disappearing from the screens when they encounter the "Marlborough triangle" and disappear.
I think that I may have sorted the issue. I used Corsten's cache removal tool (in the UI mode) and selected items 1 to 6 in the list. I had done this previously (after a new GPU driver release and after the update) However I did not use item 6 ...clearing the scenery index. Since doing this I have successfully spawned and flown at NZNS and completed a NZWN to NZCH flight that caused CTDs previously. I am a tuber so I havent got "down and dirty" to check out if the POI's are actually there or not, but i did reinstall the NZ POI update prior to running Corstens tool.
It's early days but it does seem to be working so far for me.
The tool is available on Flightsim.to
Corsten's cache removal tool