I saw you had voip+sound issues previously and crossposted at the teracube forums too
- Fluctuating volume during voip call (/e/ OS) - Teracube 2e - Teracube Community
- Fluctuating volume during voip call
you’d want to confirm your issue with somebody on stockrom too, so asking for someone to test is a good idea.
I’d read through the files and test with adjusting values in the audio/ path of the device tree. You can find them here
- initial import? android_device_teracube_2e/configs/audio at lineage-18.1 · 2e-dev/android_device_teracube_2e · GitHub
- upstream + 7 commits: configs/audio · los-18 · iode / os / devices / teracube / device_teracube_2e · GitLab
- /e/ - lots of changes, mostly build system: audio · v1-q · e / devices / android_device_teracube_2e · GitLab
the audio/ stuff is without change since initial import. /e/ moved them up to the rootdir, maybe some dependency got los. A sanity check could be to use any of the “upstream” devicetrees that some ROM uses - see if issue persists and if yes, diff it.