I don’t think it’s out of line for super telegraphed attacks to 1 shot on a 4 (old 14) which gives runed crests and hero vault.
Even LFR has had some 1 shots on very telegraphed attacks like Razzy’s breath and knock back.
This is also all relative to the players gear at the time.
As someone who just completed a GB +10, all I can say is…holy sh*t, that trash is overtuned AF. The bosses are doable, but still tough. Every trash pack has absolute units in it that will just instagib someone if your group doesn’t perfectly manage every stun/cc/interrupt. The double curse packs are BS as well.
Idk…I’ve played every mythic+ season since is started, and this season is so stressful and removes any sense of fun. Blizz boasted about their changes so dmg is less spikey and healers have more time to react. False.
I suppose if Blizz actually had people who tested and played their own game, we wouldn’t have to beta test this crap for months on end.