When connecting a macbook pro to the CRG9, the only scaled 5120 x 1440 option says (low resolution) next to it. I'm not sure exact what this means but am I not getting the full res in this mode and is there a way to solve it? Running displayport 1.4. Thank you.
Do you have the latest drivers installed on the monitor? You can download and install the latest version by visiting the link here: https://www.samsung.com/us/support/owners/product/curved-gaming-monitor-crg90-series
I think you'll find that the video chip is not capable of a native 5120x1440 resolution.
2560x1440 and 4k 3840x2160 are the best it will do. It would have to scale a lower resolution to fill the 5140x1440 screen.