It's still broken. "Safe path" frequently doesn't show up until long after beam starts moving, and sometimes doesn't show up ever. Safe path opens up ok IF it ever showed up in the first place for a while, but dead ends long before the end of the effect. Beam moves so fast that outer ring people can't live even with speed enchants unless they use a speed cooldown...but not every class has those. Blink in particular is worthless because it shoots you straight line forward by large amount, guaranteed to not be in safe spot because either not painted yet or because safe path zigged on you.
On ultra graphics, the visibility of the safe path is still nearly indecipherable, but if you know exactly how everything works in detail (and the new bugs go away) it is survivable.
For those that can't even get started on this...here's a starting point:
Go into interface, camera settings, and drag max camera distance to absolute max. Then in game use mouse wheel or whatever to take you out to just less than max possible (I personally think absolute max is just a tad too far because then ceiling interferes with the camera angle and it keeps twisting and zooming in and out on you unexpectedly according to whatever ceiling objects are in the way). When disintigrate beam starts (you have a little time) stack just barely in FRONT of boss (NOT behind), and point the camera straight along the line of the beam angled down or directly down. On one side the floor will have no special graphics at all...on the other side there will be ultra thin occassional light purple lines that move like little lightning arcs (not a ton of these, and they aren't massively visible, but they are there. These are the mysterious "squiggles" that people keep telling you to look for. They look more like thin lightning arcs to me than "squiggles"...but maybe that is just me. To me squiggles means curly stuff like you see in the fog of death, so it took me forever to see them because I was looking for something completely different based on the word "squiggles" they kept throwing around). You may have to zoom in just a little bit to see them...but not much. That side is the safe side. The side without ultra thin purple lightning arcs is death. Run forward in the safe side to whichever path you intend to follow...the inner, outer, or middle path (I've never seen the middle path, but I am told it exists). Stay fairly close to the beam (which still should not be moving yet)...but not right on it (because it is death if it hits you when it does start moving) and keep that camera angled down on top of you. Barring bugs, the path should start painting before the beam starts moving. Use shields, damage mitigation, heals, or whatever you have to stay alive until you get into the path. Once there, just follow the path and try to stay alive...don't even try to fight the boss unless you have surviving the path down cold. No time to cast anything except instant casts, so heals and whatnot have to just do the best they can as they run. When you get to the end, hopefully the bugs have been fixed and it doesn't dead end on you, and the fog slowly disapates. Again use shields, damage mitigation, heals, or whatever to stay alive...especially if the bugs haven't been fixed yet and you have to run through the fog o death to avoid the laser killing you.
If your camera is level in this encounter, instead of at least a little angled down on top of you (or flat out overhead), guaranteed you will never see anything except a wall of purple fog death, and will die in a couple of seconds tops...and even if you look around while dead you still will see nothing but an inpenetrable wall of purple death with no gaps in it anywhere. You actually do have to have the camera zoomed out and strongly angled down on you in this encounter. One person in one raid said he actually did better with the camera in "first person" mode (completely zoomed in to the point where you can't even see your toon anymore). I haven't tried that, so I don't know how successful that might or might not be.
If you follow the above, even on ultra graphics you can survive...unless the bugs haven't been fixed yet and they get you.
Exactly this. I was having trouble seeing the maze and kept biting it, but was able to get through much more easily when I took a nearly top-down camera angle. Oddly enough, though, it was when I cranked my graphics to ultra that the maze itself became easier to see.