Although if that big monitor is an OLED, segmenting it into halves or quarters is kind of begging to end up with a line burned in down or across the middle eventually.
Samsung solves this in the TV itself. It can be annoying when the edges of the screen are ever so slightly off, but i'm glad I don't have to worry about it. QCQ90S. I wouldn't recommend it since the tv's gui is glacially slow, but then again all the ones I tried last year were.