I’m hearing sped-up / chipmunk audio with Signal calls (on my phone, others sound like chipmunks, but they say I sound normal). Video looks OK. This is with the same phone and version as you (Android 16 - 4.3-a16-20260917677552-official-FP4).
@Manoj, Could this be similar to Skype calls sound like chipmunks ?
I don’t use any other apps for calls. Normal cell calls work fine (Vo5G notwithstanding).