The next round of BIOSes for ASUS ROG 500-series motherboards based on AGESA 1.2.0.1 Patch A are available below. Be sure to check the support portal over the coming days if your board is not listed. https://www.asus.com/support/
Thank you for the update. The crackling audio and AV Sync issues are almost fixed. It still happens a bit.. I will look forward to v1.2.0.2. The system also seems to definitely perform better. even reboot time is reduced.