In a couple of quick test I found it to fix a couple things..
(current patch candidate)
 Mouse smoothing can be disabled in user profile file using line mouseSmoothing=0;
 Fixed: Enemy kills made by player using stolen enemy vehicle are no longer considered as friendly kills.
 Fixed: Switching to Utes from Chernarus caused Utes to contain infinite landscape.
 Fixed: Time of day synchronized on client after connection to server.
 Command line argument -cpuCount=NNN to override cpu count detection.
 Fixed: Simulate speed of sound
 Fixed: fire from rifle distort sound
 Fixed: Crash by malformed input to a diag_log scripting function.
 Fixed: Muzzle flash was seen dark in some weapon optics.
 Improved: Audio volume settings
 Fixed: MP: Ships and boats used excessive bandwidth and CPU power.
 Fixed: Players are no longer forced to reconnect after MP Load on server.
 Fixed: bike rider can be no longer healed
 Known issue: Players are forced to reconnect after MP Load on server.
 Fixed: no particles effect when hit object with destructNo
 Fixed: Player connected to loaded game was sometimes frozen.
 Fixed: Game crashed when launched on a system with more then 8 CPUs/cores.
 Fixed: Possible crash with laser designator active.
 Fixed: Sometimes crew of a near vehicle was visible through the vehicle.
 Fixed: Infinite looping of commands 'Stop' in radio.
 Fixed: Leaning 'limits' do not work in TrackIR
 Fixed: Clients were often endlessly stuck in 'Receiving...' window after MP Load.
 Improved building destruction
 New: Functions getPosATL and setPosATL to allow controlling position relative to terrain.
 Fixed: Rainbow could be visible even with sun below horizon.
 New: command line option -showScriptErrors introduced to show errors in scripts on-screen
 Fixed: missiles should pass through vegetation
 Fix: 3D editor - civilian and resistance units did not work correctly
 Fixed: grenades may explode only on the final impact Fixed: when a grenade bounces on a ship deck, the proper particle effects is shown now
 Improved: Better airplane HUD visibility both night and day
 New: Direct analogue throttle and brake for airplanes now available.
 Optimization: Reduced frame stutter near map borders.
 Improved: better handling of gravitation for shots (esp. for grenades)
 Fixed: Sea surface was not rendered in NE area out of map.
 Fixed: terrain surface was sometimes using wrong parallax map.
 Fixed: grenade could destroy a building just by impact
 Fixed: Radio messages sometimes echoed
 Fixed - Team switch did not work when player died
 New: More flexible configuration of Flares in the config (brightness, size)
 Fixed: Reduced AI detecting slowly moving enemy vehicles by ear.
 Fixed: Prevent killed units reporting who killed them.
 MP - when unit is respawned, its tasks, diary content and skills are transferred to the new entity