[Bug] This Weeks Patch Broke Turrets Rather Than Fixing or Improving Them
I hate to say it but the turrets are bugged since today's patch "Turrets will no longer attempt to shoot a target if they don't have a line of sight (e.g. behind solid walls)". They are still shooting at things that are not in the line of sight such as behind large boulders or down the bottom of a cliff etc.
Also regularly the turrets will just keep randomly shooting at the ground when there is nothing there or nearby to shoot at. They just keep shooting until the ammo runs out or you turn it off manually. They still shoot things they are supposed to that are in the line of sigh but only 1/3 of the time as the other two-thirds of the time they are shooting ghosts or creatures out of the line of sight more so than before.
Since today's patch, turrets are kind of not worth using now because they are so broken.