OK, that looks more promising.

Now I cooked two patches.  The first one is to simply apply the existing
VIA position fix to the AMD X370 platform (1022:1457).  This should work
like the test you've done now without any option.

The second one is an attempt with simpler position fix, just reducing
the fifo size.  Give this a try instead of the first patch.

There are adjustable knobs in the second patch, at azx_get_pos_amd()
function; the first one is whether to apply the correction to the
playback stream, too.  Since there was a report about the playback
stuttering, I enabled it here, but you can try to change it.  The second
knob is the fifo_size retrieval, whether to read from the same register
as VIA, or from the SD stream register.  The end result might be same,
but we need experiments.

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Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1801540

Title:
  Microphone distorted sound on ALC892/1220 on AMD chipsets

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Won't Fix
Status in pulseaudio package in Ubuntu:
  Won't Fix

Bug description:
  Not sure if I'll report this upstream but there is definitely an issue
  with microphone recording on my desktop, this is not happening on my
  laptop which has a different codec.

  Already tried all workarounds possible, no luck. Only with my desktop
  with this particular motherboard. No issues in Windows, the sound
  recorded in there is distorted and has some static and robotic tone on
  high-pitch.

  alsa-info on the attachments

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