Can't run Unity application non-windowed at full resolution

Hey All, I have a monitor that has a possible resolution of 3840 x 2160. I'd like to build my app so that I can run it with Windowed selected and able to run it at this resolution. However whenever I build and try and run my app I can only get my resolution up to 2560 x 1600 when Windowed is selected. See the attached image here: https://imgur.com/a/0eHrQ Does anyone know of a possible solution to do full screen windowed where I can have it be the full resolution of my monitor? Thanks!