I did a job in wich I had an animation of 5760x1080 px spreaded in 3 projectors. I had 2 graphics cards. 1 of the display ports outputs was not in the same syncro than the other 2 from the graphic card 1 and had a millisecond delay so the animation had a split . We solved using a graphic card with 3 outputs that were in syncro.

But that could have been solved really fast and really easy by having the option of delaying the outputting signal of any of the monitors !!!!

Thanks!