N.B - THIS HAS HAPPENED OCCASIONALLY/RARELY
Heavy breathing sound (as in from extensive running) initializes after a very short spell - less than 30 meters moved since logging in. This may be temperature related - as HUD bars came up "cold" on joining server.
Also - seemed to intensify while crouched or prone. When in 'COLD' state, actively started up when dropping to crouch mode after few seconds (There were no breathing sounds before crouch)
'Cold' state, melee weapon in hand - run for more than 15 seconds.
Also has sporadically happened when near to or in 'cold' state, usually manifests after several seconds after continued crouch (with or without weapon drawn)
Suffered it intensely after logging on today - almost game breaking as it drowns out your ability to listen for anything else in game. Managed to break the process by opening abandoned car-boot in game.
SORRY - SHOULD ADD: THIS WAS ON A FIRST-PERSON/HARDCORE EXPERIMENTAL SERVER
Super-Necro post reply: NO, it has stopped completely and no longer an issue :)
Cheers Andy