Can Google.com And Other Heavily Trafficked Websites Get A "fast" Rank Using Google's PSI API?
Answer : To directly answer the question, no it's not impossible to get a fast FCP label. There's more to the question so I'll try to elaborate. Another way to phrase the "fast" criteria is: "Do at least 90% of user experiences have an FCP less than 1 second ?" Why 90%? Because it's inclusive of a huge proportion of user experiences. As the PSI docs say: Our goal is to make sure that pages work well for the majority of users. By focusing on 90th and 95th percentile values for our metrics, this ensures that pages meet a minimum standard of performance under the most difficult device and network conditions. Why 1 second? It's a subjective value for how quickly users expect the page to start showing meaningful progress. After 1 second, users may become distracted or even frustrated. Of course the holy grail is to have instant loading, but this is chosen as a realistic benchmark to strive towards. So at worst 10% of the FCP experien...