Yes, we don’t read documentation provided enough carefully
I figured this out not long ago...reading carefully Stiebler documentation, i realized using EnvSim.act dated 2016, we must not activate Hsie bad weather fix otherwise the Night Vision Fix will NOT work
Using EnvSim.act dated 2012 or below, we can activate Hsie bad weather fix without any bad effect on night vision fix...
That said, there are some fine tune to be done on fog distances and Hsie.ini file, because night vision fix is using fog layer to decrease the crew night vision.
