Not sure if this is a known bug or not, or if it's simply visual (but I doubt it's only visual since it effects actual damage numbers). On Xbox One (perhaps on PS4 and PC - I encourage someone to test), the Crushing Wall Enchantment seemingly only works for 1 player. So let's say all 8 dps are running crushing wall. Whoever applied wall first will benefit from Crushing Wall, but noone else will. Then, once player 1's wall falls off, it will go on the player who applied it second, and so on and so forth. This is a dps loss of 2-3k multiplied by 7 dps....
I did not test it, but some Xbox players I know did. They tested on a target skeleton with no gear but a VMA Inferno on.
Player 1 used Wall first, before player 2. His LA did 3446 damage crit
Player 1 used Wall second, after player 2. His LA did 1783 damage crit
As we can see, only 1 player can have crushing wall active at a time. If this is not intended, we are missing out on a raid wide 14-21k dps. If it is intended, please let us know, because that is not how the tooltip is worded.
Thank you.