I'll start off by saying lahn is in a very good spot right now. Unfortnately since the scaling patch 3-4 months ago her movement feels really bad with extra attack speed coming from 1. Succ lahn E buff (35% attack speed) and 2. Shai buffs. Movement animations with these buffs (E buff and shai buff) have made succ lahns iframes at least 50% less then they were before. This is something that is very bad for pvp gameplay when trying to dodge grabs and taking less damage. Reducing iframes and making animations into flight feel very iffy. Also it speeds up flight animations which also increases desync into the game which is also a reason why lahn is very good. More desync = less reaction from people not expecting it.

1. With shai buffs and e buff
https://medal.tv/games/black-desert/clips/joRekILDutxDy68BA?invite=cr-MSxKNmksMjc3MDM1NTgyLA

2. Without shai buffs and e buff
https://medal.tv/games/black-desert/clips/joSFM4kkhTw6QyWg7?invite=cr-MSxvbDYsMjc3MDM1NTgyLA

It's a very small detail to the class like I said, the class is still very strong in this state but also less consistent when it comes to using Shift+S into W+F (Flight). It feels very bad from a assassin stand point to have iframes lowered due to having a mainly attack speed passive/e buff. Honestly it needs to be reverted back to scaling with movement speed instead of attack speed just for more of a consistent flow of the class.