bug: Choppy/glitchy incoming voice audio on Intel Mac running macOS Catalina (10.15.7)

[dnalite3-creator]

Concord version

2.2.8

Operating system

macOS Catalina (10.15.7)

Terminal emulator

Terminal.app

Graphics protocol

Unknown / not relevant

Install method

Homebrew

Steps to reproduce

1. Launch Concord
2. Join a voice channel with another person already in it
3. Listen to their audio while they speak

Expected behavior

Incoming voice audio should play back clearly and continuously.

Actual behavior

Audio from other participants is glitchy/choppy — breaks up intermittently during playback. My own outgoing mic audio reportedly sounds fine to others (once allow_microphone_transmit was enabled).

Logs

Additional context

Internet connection is stable/fast; ruled out as a cause.
opus (1.6.1) and pkg-config were already installed and up to date before and after a full clean reinstall.
Performed a full uninstall (brew uninstall concord, removed ~/.concord, ~/.config/concord, ~/Library/Application Support/concord) and fresh reinstall — same version, same symptom.
Suspect this may be related to CPU load on older Intel hardware causing audio buffer underruns, but wanted to report in case this is a known/reproducible issue on similar setups.

Confirmations

• I searched existing issues and this is not a duplicate.
• I removed tokens and other secrets from logs and screenshots.

[arthiccc]

i have this issue as well (bump)

concord 2.2.11
windows 10 (ltsc)
powershell (windows terminal)