Watch this berzerker at 6 min 40 sec: Display Spoiler
That might not be skill prediction, but it's still probably a proxy. My guess would be the GM Panel, because he teleports around the map.
It is a "proxy" called Latency RIP. Here you can see it in action. It uses an insane range of teleport. It is so high, it can literally travel from Velika resurrection teleportal to the entrance of Velika Outskirts in one single move.
Also regarding zerk not sure if it a module or a bug. Either the zerk literally lags like shit, either he has a nodule installed or he uses punishing strike on a-stance. Yes it is possible this is how good sp is made allows you use skills from d-stance (intimidation) on a -stance teleporting like a retard.
As a module it's broken and unbalances the game completely. It allows you not to kill anyone or get any significant advantage, other than crashing your client without having to resort to other users for it while getting banned for playing with over 1k ms spikes on a daily basis.
You can get it by living in any foreign country without IP block and/or a censored connection, you don't even need to install any third party software.
As a bug abuse, it's extremely effective to confuse other users. Its main function is making them mad, as they literally don't know what's going on, since they haven't been able to download it in their google search of choice.
Also that zerk is using a stance and the skill used to teleport is WASD, so this particular module even works for d stance.
Why do you all have a bad ping? Are you too stupid to use a DSL cable or to get a better Internet?
Some people can't afford to live next to the server with the best connection for increased latency perks and play the game because it's free to play. Because getting a better internet is just about being smart 