Too Long; Didn't Read
There exist <a href="http://geekswithblogs.net/LeonidGaneline/archive/2015/05/06/serializers-in-.net.-v.2.aspx" target="_blank">various</a> <a href="https://www.hanselman.com/blog/ProperBenchmarkingToDiagnoseAndSolveANETSerializationBottleneck.aspx" target="_blank">articles</a> on <a href="http://theburningmonk.com/2014/08/json-serializers-benchmarks-updated-2/" target="_blank">benchmarks</a> of <a href="https://maxondev.com/serialization-performance-comparison-c-net-formats-frameworks-xmldatacontractserializer-xmlserializer-binaryformatter-json-newtonsoft-servicestack-text/" target="_blank">serializers</a> already. Even <a href="https://github.com/sqfasd/node-serialization-benchmark" target="_blank">various</a> <a href="https://github.com/thekvs/cpp-serializers" target="_blank">github</a> <a href="https://github.com/aumcode/serbench" target="_blank">projects</a> <a href="https://github.com/mtth/avsc/wiki/Benchmarks" target="_blank">exist</a> without articles attached to them. This goes for every language, a testament to how much performance matters to some people.