I currently have 3 x 24" monitors (BenQ XL2430T's) running at a combined resolution of 5760 x 1080 on an Nvidia GTX 1080Ti (Desctop and game runs across all three monitors as though it was one large display, This is setup using Nvidia control panel - "set up multiple displays - surround display{F582232}" option
But when accessing the inventory system in DayZ it becomes all distorted (See attached screen shot) this was not a problem in 0.62 and the early version of 0.63 I could drop the resolution to play across just one monitor (Which would eliminate the problem), but in the recent patches (Probably just before BETA, it is no longer possible to select a preferred screen resolution in game (It defaults to native resolution either in full screen mode or windowed mode. I have also been told from people running high resolution wide screen monitors (Not just muti-monitor setups) that they are getting the same problem.