I know this sounds incredibly elitist, but I need help with getting Crysis 3 to work in 4K. (4096x2160)

Currently, this display is running through two DVI-D connectors and as a result, Crysis only wants to set the resolution to half of the display. (2048x2160)

Is there a way to run a custom resolution in windowed mode? I don't mind running in Windowed mode. For BF3, for example, there's an app called BF3 borderless that adds resolutions and allows you to run the game in Windowed mode.

Is there anything remotely like this that I can do for Crysis 3? I think it would be cool to play Crysis 3 in 4K, you know? I've got the GPUs to do it, so why not?

I found the Crysis 3 CVar Configurator, maybe that'll help...