Would love help/advice deltascape v4 savage

[Aivi_lo]

Trying to farm this for the mount. I've cleared it but I keep failing a mechanic and I can't work out what I'm doing wrong. I've tried watching videos and read the guide etc, but can't work it out.
During grand cross delta, I stack with the healer (I'm DPS) who has deathwave, unless I have acceleration bomb. Sometimes I survive but other times I'm pushed off and taken a lot of damage to something called "death bolt". I don't know what mechanic does death bolt damage. Thanks for any advice

[Vnolan]

Grand Cross Delta: All DPS get the Off Balance debuff, two DPS get Acceleration Bomb and the other two DPS get Beyond Death. Off Balance knocks the player back if they take damage, Acceleration Bomb will detonate if they perform actions or move when it's about to expire and Beyond Death will kill the player if not removed before its timer expires. Beyond Death is removed by dying to a mechanic.

When it was current only one tank stacked with the healer in the NW corner, DPS stacked at the very top, the tank with forked lightning was at max melee south and the healer with forked lightning was to the right or NE. DPS with Acceleration Bomb stop performing actions as it's about to expire and dodge the upcoming lasers, while the DPS with Beyond Death fail the upcoming laser mechanic.

At lvl 80 the healer should be able to take the stack solo.

[Aivi_lo]

I was stacking with or near the healer with deathwave for the pushback mechanic. I think I was getting pushed into another mechanic then caught with damage and off-balance pushed me further (then off the platform).
It got better when people started using assigned positions and I could plan where to be

[Aivi_lo]

Thank you for replying and your advice