Qubes OS 4.3.1-rc1 works better with MSI Z690 than 4.3.0 but stream isolation doesn't work

I tested today the Qubes OS 4.3.1-rc1. It works better with MSI Z690 DDR4 than 4.3.0, but the stream isolation has same problem like in the 4.3.0.

Same problem like this > How to setup the new qubes 4.3

The stable version of the 4.3.1 doesn’t works again with MSI motherboards.