I am using Adrenalin 2020 to record game play including Apex Legends using 5.1 surround sound. When Adrenalin 2020 is setup so "Audio Channels" = "Automatic", it records 6 audio channels as expected except when there are too many sounds playing or the audio is too complicated across multiple channels. For example, dropship jet audio crackles horribly in the recording even at the maximum bit-rate of 320 kbps. Youtube recommends 512 kbps for 5.1 surround sound.
Please include higher audio bitrates beyond the requirements of 7.1 surround sound.
AMD Adrenalin 2020 >> Settings >> General >> Audio Bit Rate
Additionally, the app could recommend a range of audio bitrates based on the current audio setup.