http://wiki.answers.com/Q/What_is_the_maximum_depth_a_human_can_dive_to

Re-Breather Use
The options for modern exploration are most commonly open circuit scuba and re-breather. Diving is limited by the correct mixture of breathable gases. On open circuit "classic" scuba the gas must be mixed ahead of time, while on re-breathers a diver always has the right mix of gas for the depth. Australian diver David Shaw successfully used a modified recreational re-breather to reach a depth of 888 ft (270 m) in fresh water in 2004. (Shaw died on an attempt to recover a fellow diver's body in 2005.)

Lighting conditions at depth is also unrealistic. This is at 152m http://feedback.arma3.com/file_download.php?file_id=2167&type=bug

A bit bright, no?

http://wiki.answers.com/Q/What_is_the_maximum_depth_a_human_can_dive_to

Re-Breather Use
The options for modern exploration are most commonly open circuit scuba and re-breather. Diving is limited by the correct mixture of breathable gases. On open circuit "classic" scuba the gas must be mixed ahead of time, while on re-breathers a diver always has the right mix of gas for the depth. Australian diver David Shaw successfully used a modified recreational re-breather to reach a depth of 888 ft (270 m) in fresh water in 2004. (Shaw died on an attempt to recover a fellow diver's body in 2005.)

Hokay, I think we've got ourselves some mixed up terms here perhaps? =)

First off: When I speak of Deadzone, I am talking about TrackIR Deadzone, as illustrated in this picture: https://dl.dropboxusercontent.com/u/4849376/TrackIR_Deadzone.jpg

Not as in ArmA 3's Deadzone setting, as illustrated here: https://dl.dropboxusercontent.com/u/4849376/TrackIR_Deadzone.jpg

When using TrackIR, there is no need for ArmA 3's deadzone. Albeit, it's nice to have a little deadzone on yaw and pitch in the TrackIR profile, as that means not every little twitch in real life will be translated into the game.

With that in mind, and with these settings, this is how it works for me ingame. Mind you, I am not moving the mouse much.. http://youtu.be/VxPiSkAjmLw

Could you try eg. dslyecxi's track ir profile for common reference? I used that as a quick start setup after new installation of windows myself. This profile works well for me, with some minor adjustments.

http://dslyecxi.com/trackir5/