What is better for performance? Parallax mapping or nanite mesh with a lot of polys?

I don’t know what just happened, but i switched to my tv as a monitor that does 1920x1080… Not only is it more resolution… but somehow the fps went up. im now getting like 40-50fps with lumen… and 60 fps with lumen disabled… wtf???

Previously if i looked off at the sky it would give me a massive fps dip , but now that dip is non existant as well… any idea what thats about?