Owners of the AMD AM4 platform should postpone updating the UEFI motherboard to the current version. From those who managed to install the firmware based on the AGESA 126.96.36.199 microcode, there are complaints about slow performance, overclocking problems and much more.
Issues that can be encountered after installing UEFI on AGESA 188.8.131.52 microcode include a 100-150 MHz turbo speed drop, limited Precision Boost Overdrive, unstable operation of high-frequency memory with stock XMP settings, and a decrease in performance of the second CCX complex. Some of them were seen in AGESA 184.108.40.206.
The best choice for owners of Ryzen and Athlon processors is now UEFI firmware based on AGESA ComboAM4v2 220.127.116.11c microcode.