Use the forum's search function upper right to enter that resolution and you will find several threads with discussions regarding your monitor questions and concerns.
I connected the surface 3 to LG ultrawide 29um57 (21:9 2560x1080). But 1920x1080 is the highest resolution that I can choose. I have tried different displayport to hdmi adaptor or a cable with displayport to hdmi.... can't find any solution here...