Soccer is not fast. It may be non stop, but it isn't fast. It's the announcers that fool you as they try to talk fast. 98% of the time, soccer is a game of passing the ball. How many strikes at the goal are done on average in 90 minutes of play??
I've been responsible for both football broadcasts (flagship station for Alabama football, same, years later, for Seminoles football) and soccer broadcasts (Liga MX, Chivas, and several teams in Ecuador on several stations) and worked with football play by play greats like Doug Layton and Gene Deckerhoff. Keeping up with play in pro soccer is much harder than in football, which is much more dependent on color due to lack of more than a few seconds of action at a time.
I've seen soccer play-by-play announcers literally collapse after an intense game.
Here is one of the best narrators calling what is maybe the best goal in history.
https://www.youtube.com/watch?v=tKTyYTmkp2s