Does MW5 Clans lack "free look" arms reticle control I'm familiar with since MWO?
UPDATE: Problem solved. I mapped key "H" to free look. Study of gameusersettings.ini revealed that "H" is also mapped to hidden "ToggleAirstrike" function (not "Airstrike Charge" available in the mapping table in options) which caused conflict. I edited the .ini file to remap "ToggleAirstike" to another yet unused key, and my habitual "H" started working as free look.
I didn't play for a long time, but in MWO there are three modes of operating two reticles (at least with the mouse): in "arms lock" arms are locked to torso (toggle key), in default mode both reticles track the mouse movement as fast and as far as they can with arms leading and torso following, and free look decouples the camera from torso controls, allowing to glance around the cockpit and aim only the arms reticle (hold key). In Clans control mapping there is "free look" position, but the key doesn't seem to do anything whethet I press or hold it ("arms lock" toggle works as intended though).
Only mods I use yet are "unlocked camo patterns" and "bronze cockpit glass". My joystick is unplugged from PC as I have noticed its parasitic input interfering with the mouse already in the menus when customizing my options. Mech control mode is set to "Classic" (there's another bug I don't care about - in "Modernized" mode mech doesn't react to throttle keys, but I don't use it).