Yup, users appear to have discovered another Pixel 2 XL issue, and this time it involves the phablet’s audio recording capabilities. The problem was first reported in the Pixel user community, with a number of users claiming that whenever they record a video, the audio quality is a bit inconsistent, to say the least. Apart from the thin-ish quality of the overall sound, background audio are also a bit messy. One user has even uploaded a recording that has some muffled audio bits.
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https://www.wirefly.com/blog/news/google-provide-fix-pixel-2-xl-s-audio-recording-issues-soon