I can't say I really know for sure, but I doubt it would affect performance noticeably.
I would be more concerned about all the trouble tickets you might field from "broken" web pages. Go to Facebook or espn sometime and see how many requests and countries traffic starts flowing from and to with ads and trackers, but also things that make sites functional. You may be surprised.
- Ex community all-star (⌐⊙_⊙)