wrote:

1. my rail goes inside enemy when i die. (i just can shot (rail) 1 time but i am already dead on server side, i dead around 1,5 second later)

In my case whatever is the weapon i hear also the complete sound and no frag , other times shot sound but no mark of it on the wall. I think why to hear effects if the action is just never happened ? so i prefer to use \kill.
And as always when you have 3 enemies and you can kill 1-2 of them, weapons stop to work, all become slow; When this happens, I have already resigned and I do nothing ).

wrote:

2. Enemy can kill me when enemy spawning

( like a randomly no spawnkill protection )

wrote:

4. i can shot by the enemy when the enemy model does not face to face.

Sometimes i kill enemies shoting the void next to them ), not fair from my personal pov, and strange thing.

wrote:

5. i watch some low ping players they playing like duck hunt its not fair.

As it is not fair when they use LG u.u (noobs, if i use lg like you i need 3sec for kill , somebody saw me . Use more rail that you can, from euro central megamix ).