Less FPS for better graphics (Fortnite)?

I have built a new pc and play Fortnite because I have a 165hz monitor, of course I have set the fps to 165 but now I also want a better graphics so e.g. Anti-aliasing or the effects just for that I have to set my fps to 144 to prevent fps drops. So is it worth it?

It depends on what is more important to you a nice graphic or rather a better fluid feeling. But actually 144 fps are enough in Fortnite.

As long as you're not an athlete, 60FPS would be enough, but 144 will definitely be enough.