Seeing as you've gone quiet, I probably don't need to post this again, but I'll do it for good measure:

Anandtech found that 1.0.0.3 performed equally in gaming and MT loads, and 3-9% better in ST ones with the lower clocks of 1.0.0.3 compared to 1.0.0.2.

Source: Their review of the 3700X and 3900X. They tested both BIOSes.

This was done around the launch period, and has been known for ages. But thanks to people like you who didn't bother to actually go back and check to see what BIOSes were actually used in testing by reviewers, the misconception that performance has decreased from the launch of Zen 2 has now spread, despite the fact that it hasn't, and that the majority of reviewers tested on 1.0.0.3