Dungeons and Loot Amount

[ShadyXV]

Hey,

I have a Short Question, does it make sense do multibox old content like dungeons or raids for transmog? Will I get double the loot from trash when I run it with for example two chars or will it be split. If it is double does this also apply to boss drops like pets?

EDIT: One more thing I forgot, I have a 4K Monitor and because of this the green boxes
which should got over the attackbar are to small and the wow attack bar is already as small as possible, is there a way to resize the green squares ?

Thanks in Advance