Just a split second after they're full sized. Managed to kill myself on one attempt last night going right as they fully expanded so I just played it a little more safe from there. Waiting for the four tether attacks to go off fully seems to be the safe point of being able to run through them in last phase.
To me it feels like the server may be calculating the orbs ahead of the actual animation (which shouldn't be happening, the animation should always compensate for latency and be 'ahead' of the tic) since I've gotten tagged for a vuln stack before, despite clearly being out of the shit on my end.
On another note, fuck this fight currently. Just takes one person to make a mistake and it may as well be a reset at spots. Going to suggestsome safer strats for the groups I run with, particularly not baiting spires from the middle of the first fist knockback since someone always gets killed by the hand knockback somehow. I just don't have a decent landmark to have people bait the spires from, outside of a little left of the center of Sep's targeting ring.
Was wondering, for earthshakers, is melee range safe in the middle if the shaker targets spread to the left and right side of the arena, or will it clip people there? Been considering the alternative of baiting shakers to the left and straight down the center so the entire right side is clear to dps from if not.