I don't really know what you are asking here, are you saying the plugin is not setting these server vars? Where is the screen shot from?
Why would you set such a crazy speed? That will likely cause you all sorts of problems. Why not try a more sensible value of 100 or 150 to begin with and test that to see how it is. 5000 is crazy. I don't know what you mean by "the program runs at the same speed".
There is no such option, the heli updates targets constantly while active within its target range. Within the targeting logic, if it loses sight of a target after about 6 seconds it will initiate a strafe of the last known target position. After the strafe the targets are cleared unless it sees the target again or acquires a new target. This is default Rust logic and I have not altered this. So if targets hide from the heli too long it will fly away (unless you have the config option enabled to return the heli to player if it goes too far away).
"Force Helicopter to Return to Player if it Moves Too far Away": true, (heli will return to player after they respawn)
"Force Helicopter to Return Even if Attacking Other Players": true, (as above, but will also stop attacking other players and return if set in the config to attack others)
"Force Helicopter to Return To Original Called Position Instead Of Player": true, (instead of returning to the player wherever they respawn or teleport, the heli will return always to the place it was called)