I wouldn’t worry about it, you can adjust a few world settings, and add a post process volume and adjust settings there to get you above 120 fps. But as Nobody said there isn’t much difference in FPS between a mostly empty scene and one with lots going on.
With a few adjustments to settings you should be able to get over 120 fps in the editor no problem. I am running this on 7850 OC, I5, and on a 2560x1440 monitor and I am usually around 90-120 fps