Adjusting stances seems to be unnaturally fast for a human, player behaves more like a robot with superhuman strength, flexibility and response time. Even changing regular stances seems to be unnaturally fast (stand - crouch - prone)
But mainly it is the animation where the player takes up a knee or stands up from a knee that is way too fast.
Try to take a knee or stand up from kneeling position in real life. It's hard enough without full combat fatigues, gear, weapons, etc.
Launch editor
Place self as soldier/armed person
Go to full standing (Ctrl+W)
Then hold Ctrl+S and observe unnaturally fast change of stance through all phases
Do the same in reverse, Ctrl+W (from lying down sideways to full standing)
Most stance adjustment animations need to be slowed down 10%-15%, and the animation of taking a knee should be slowed by 20%-25%.
Animations for stance adjustments between prone and crouch should take the longest time, with upper body/arm stance adjustments taking the least, but still slower than current implementation.
Please note I am talking about stance adjustments and not changing stance the normal (read: ARMA2) way.
Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.
If this issue is still relevant in current dev build, please re-post.