Sorry SE, but endgame won't work if you don't fix something.

[Gamina]

My daily bump for some kind of response.

[Cienna]

you can indeed avoid the mechanic based on the enemy cast bar.

http://www.youtube.com/watch?v=QsHuXAl-bOY

At 6:21 landslide cast begins
At 6:22 player leaves aoe with cast bar at 75%
At 6:24 player is hit by landslide and knocked off

They were out of the red area well before the cast bar finished. They still get hit. There are many more examples in this thread, like Sunarie's 2nd video about 10 pages back, and heaps more in the 100+ pages of this thread. It is broken.

So not attacking you, but you say we can avoid getting hit if we pay attention to the cast bar, if moving out at 75% doesn't save us, what does? I think that moving out at 75% should be safe, but yet we still get hit.

[kayuwoody]

snip

Oh, I completely agree. As mentioned I have myself seen this firsthand. I was doing two things:
1. Pointing out that the video links in the OP were not at all helpful in showing the issue. It'd be nice if the clearer videos like the one you linked were in the OP.
2. The way things are unfortunately your best method of avoiding boss damage is the cast bar. I find it quite consistent as long as my link isn't lagging (someone torrenting in the house for example) and if I make it out before 80% of a cast bar it's not an issue. Anything past that though, and it's really iffy. I think this particular person has bigger latency issues than me though!