https://youtu.be/nIcgx6EOSos This is what I noticed if multiple people gap closer you let's day 3 it'd a reasonable number of people.If all 3 gap closer you at the same time it promote locks your character in a similar way to immobilizing them.Also even when dodging rolling you only escape the damage but still get the snare.The snare thing on your vid is effect of "fixing" fap... gap closers, as it applies unavoidable snare so anytime someones is escaping you just use gap closer he wont be able to escape even with escape skill, the only escape move that works is... (drums) dodge roll. It happends to me all the time btw, just watch carefully, each time you slow down someones charging at you. The only thing i dont understand from the vid was the root moment, thought you were cought in a gap between casts but no.. Maybe few gap closers at a time can decrease your movment to 0? Dont know that...
You may have already been debuffed with slowed speed before that spell was cast. If you look at the time stamps on your video, your using a Flame staff and at the 6 second mark, you show a 2k Hit from Frozen Weapon which slows your movement speed. That skill will not cleanse debuff's, only prevent them from happening while casted.
See Vamp use mistform to kite;
NB ARMY GOGOGOGOG CRIT RUSH AMBUSH GOGOGOGOGGOG...
Vamp: X.X
https://m.youtube.com/watch?v=jXhbKQszB5k