This would definitely help in forests for me. Most of my arma3 lag is in the forest because of all the trees, I get extremely low fps and have to disable shadows.

Please specify what boat this relates to. I am able to enter the largest speedboat without issue.

Take a helicopter up, clouds go up too. From the ground the clouds look like they are only 1-2 thousand feet up, but they are actually much higher once you try and touch them

I guess using that you could top off on ammo?

I would like some 4 tube NVG's

So it seems that the issue here is mainly the gauge reading zero when they are clearly still rotating (powered flight) as OP says

Of course don't expect a perfect simulation of the aircraft but at least have gauges make sense and not show total BS

Delicious nades. Good to know next time I play