I've observed this behavior so often I am now wondering why players keep doing it.
To explain the 5km rule, whenever engaging an enemy Scimitar (Donatra is the one we see most often), you must keep a minimum of 5km between you and her.
A secondary requirement of the rule is that you must recall all active hanger bay pets, because they can also break the 5km distance.
If anything gets closer then 5km, player ship or hanger bay pet, she will cloak instantly.
And this is not my own speculation, it is based on hours of observing Donatra in KASE.
The worst match was when all the players would engage Donatra at point blank range with a high number of hanger bay pets going after her.
It took 20 minutes to bring her down because she was cloaking every 2 seconds.
The best match was when all the team knew the rule and kept hitting her from at range.
She rarely cloaked.
And inevitably, you'll see at least one player hit Evasive Maneuvers and move to within 1km to attack Donatra.
With the expected result of course.
KASE has been in the game long enough for people to learn this rule, I've even said it myself on occassion.
So why is nobody actually learning and following the rule?
The 5km rule went away 2 or 3 seasons ago. The new cloaking/thalaron algorithm is not dependent on player distance:
Originally Posted by borticuscryptic
I don't wanna give away the WHOLE thing, as learning to deal with a Boss Encounter is half the fun of beating them. But, I'll lay a few truth-bombs on ya, just to clear the air.
Firstly, as long as she is in Combat, it is guaranteed that she will eventually Cloak, no matter how far away from her you stay.
It is true that this behavior occurs more frequently if you get within a certain distance from her. It is also true, however, that getting close to her is not an instant 100% guarantee that she will suddenly Cloak.
***Quote by a player saying Donatra's cloaking pattern should be clarified by the devs***
I'm going to have to disagree with you here. A Boss Encounter requires a schtick - a powerful attack or ability that can only be countered by players if they know how to properly counter it, and pay attention to the fight. There are very few Boss Encounters in the MMO gaming world where anticipation or prevention are considered valid counters - reaction is nearly always required.
In the case of Donatra, her schtick is the Cloak+Thalaron maneuver. But honestly, the counter to it is fairly simple - keeping maneuvering abilities in reserve, and reacting to her charge-up when she decloaks, after you've examined her firing arc. The charge-up time on this blast is 12seconds -- the challenge of the fight is learning to move out of the clearly-marked 90-degree firing arc of this weapon, before it goes off. If you cannot do so within this 12 second window, keep practicing. You shouldn't need more time than that.
The 5km rule is horribly outdated, and perpetuated by bad information.
Changes made to her (Donatra) AI did add a random element to her cloaking regardless of the distance of the players (6 months ago or so?). Sometime in the last 3 weeks a previous bug was reintroduced that causes her to discharge her main weapons WITHOUT the buildup. It can be triggered by subsystems crits which is annoying.
Does she always cloak when player get within 5km? NO.
Donatra can be immobilized, drained of power and easily disposed of. The varied interplay of science skills, with the concentrated firepower of a few tacs makes the Dontra phase of the mission almost an after thought.
And everything and anything else that will cause Weapons or Aux offline will trip it.
Constant exposure to the same opinions leads to continual reinforcement of ideas until eventually, any challenge, no matter what form it takes, is going to be met with a disproportionate sense of outrage. Room for reasoned discussion can no longer occur.