Eh, I’ve tried to finish this boss alone but this time error window pop-up before downing boss HP under 50%. So seems like i cant finish this boss with party or without party. I think its something wrong with client files or maybe server? Because i think my PC is good enough for minimal/recommended i think? BTW. This window show it’s face all time for first time, I had this error before in dungeon 90 lvl +, but that was one time “adventure” with it.
Yea I have been getting the same glitch but with the Cactus boss
Okay then,
We done that boss already. We get to party “Mystletainn” (thanks for help mate!), and annihilate boss as quick as possible, dont letting him to use “red dots skill second time”, and crash dont pop’up. So try to find some comrades to party and just make armaggedon with boss 
Oh well, here we go again. Seems like this problem occurs on every boss, so we have to waitng for fix this problem. This time next map, next one from owl burial ground(this one for 112lvl)
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If boss is gonna use red dots skill u have to just move back from him, and stand and don’t move. U cant attack him, make him bleeding(or another dots) u have to wait until he stop spaming this dots. There is huge reply to this problem on forum.
They’ve been trying to find out the issue (theres another thread with this issue to) The Bosses aoe red dot mov cause FPS to drop under 1 which seems to cause the crash. Only real solution id see atm is if they could remove that move from bosses until its figured out. As for running away that works sometimes, its not 100% plus since bosses tend to use this like 3-5 times a fight every chance is another one of it crashing even if u run out. Hopefully they figure out a solution soon id like to advance the progression quest but unfortunately this bug is preventing that for me so been grinding from time to time until they fix it.
Got the same bug only worse (crystal mines).The boss is no longer there when I log back in and the game won’t let me progress until I kill, the now non-existant, boss. 
same here… in the same boss, is the first time that happens here
Same trouble, with this one, with the tree boss in the next map, and when i helped a guy with a cactus boss in zachariel crossroads some people told me to kill it as fast as i can but it crashes always when the boss is arround 35%hp other guy told me to kill it as slow as i can but i dont think it would solve the problem lol.
Hope we get this bug fixed it is so frustrating lol
Yeah, same problem here with the Corrupted boss at Owl Burial Grounds.
At least I’m glad this isn’t happening only to me, so it should be fixed quickly.
Encounter same problem when boss at Poslinkis Forest use skill. Game crashed every time during boss battle. Please fix this bug quickly.
I tried creating other characters, since I couldn’t use my main who got stuck in one of those storyline boss fights.
I can do every single boss and quest from the beginning until Crystal Mines 3F. I think I also got hit by the red dot skill on the boss from Crystal Mines 1F (in the last room leading to 2F, Shadowrazer I think??)
This bug is incredibly game-breaking, considering it came in a patch before the last week of iCBT2
Just adding to the list so IMC knows this is serious, I also crash in 3F boss. Tried party no party. Moving away and still no luck i crash every time. It will happen sometimes at 50% HP other times at 15%. Have not been able to get around it.
I unchecked all below Graphic Settings and I switched to window mode with vertical sync off only then I was able to finish the quest without crashing 
What I did is kinda same but different.
- Uncheck all choices in Graphic Settings.
- Turn Performance into “Low Mode”.
Didn’t crash or get error even though the bullets are hitting me or im hitting them while in rage mode.
Then undo them (put them again into your settings) after the boss fight.
Pray tell if others tried this and didn’t go well like mine.