Filebeat can be quite fast. When tuning it's a matter of tuning all services, Beats, Logstash, and Elasticsearch. Tuning needs can very much differ from environment to environment.
I'd recommend to read this discussion, as it contains a many tips and good practices applied.
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.