I use steam in a arch linux chroot to avoid gentoo's x86 depencency hell, although ALSA inside the chroot works, it doesn't support advanced features like bluetooth, usb output and more.
In this article, I talk about how to configure pipewire in chroot to achieve features mentioned above.
Update in 2022-02-10: This article contains spoilers and outdated information, and I am too lazy to fix them.
I recently found out that you can optimize linux kernel even more by using clang-fullLTO, and here's how I did it with the help of kernel.org.