AMD has posted a declaration on its Ryzen Twitter account in regard to reports of 3rd Gen Ryzen processors not offering the levels of performance that were expected by users. The post states that the company is working on a BIOS update that should deal with the boost performance issues that had been affecting SKUs such as the Ryzen 9 3900X.
https://www.notebookcheck.net/AMD-addresses-issue-with-3rd-Gen-Ryzen-processors-failing-to-reach-advertised-boost-clock-speeds.434108.0.html