The god damn deathsinger has become impossible due to all the glitches, crota still pulls bullshit such as immediately getting up or not going down the bridge and the thrall run are the only parts of the god damn raid that are even slightly playable without glitches and even then they still have a bunch of problems, stop focusing on useless bullshit and fix your god damn raid.
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Going to orbit and back again usually helps, or doing the same thing but also promoting a different player to team leader before going back down. Haven't had too many glitches on Ir Yut to be honest, only a few on Crota.
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Evidently it is possible. People have beaten it.
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Deathsinger is the easiest part, even the shit teams I've been in with haven't struggled?