Scaled resolution options for external monitor disappeared.

I use a LG 27UK850-W via usb-c connection as a second monitor. One day my resolution defaulted to 1080p when I connected my monitor. When I went to go adjust the resolution to my usual larger (I think it was 1920, can't remember), all my other scaled resolution options have disappeared. My older monitor I use at the office, LG 27UD88-W, doesn't have this problem. It has all the other scaled resolution options and defaults at a higher resolution as expected.