nvidia surround problem

I have 3 monitors the one in the middle being a 35 inch 3440x1440 ultra wide and then two 24 inch monitors on each side. I want to setup surround but every time I try it gives me a resolution of 3072x768 and it looks awful. Anyone know how to fix it? Sorry if this is a stupid question by the way.

Hi! Trying to use Nvidia Surround with my 2 external monitors but I can neither choose the 1x3 topology or choose my laptop display as one of the options. It's always greyed out. Anyone know a workaround or a fix?