How long it will take? I play with the skill Evasive Bionics and through the bug I lose the 5 stacks and die after the execution (which I do not want to see). This is extremely frustrating.

No,  there is no slow down during the execution. But time keeps running and that's why the positive buffs are running out.

So is this animation that totally takes out one of the game flow, wanted? I played with a physker yesterday. When the animation started with me, all mobs attacked the Physker and he died. Just because I did not have aggro anymore. Please give players the option to disable the kill animation if they want it. 

And please in the next few days, otherwise I'll have to stop, unfortunately, that this "mistake" takes a lot of fun.

And just in the warzone, where it can depend on any second, it is also extremely annoying, if you can not make the level because of this animation.

Is there a way to disable it for yourself? It's 8-9 seconds where you can not do anything.

Yesterday my teammate died again in the Warzone, because I lost the aggro during the animation and all mobs ran on my teammates. When will that finally change? Try to make at least the few players you still have to make happy, before they stop completely with the game.