Audio: fix crackling via larger output buffers#574
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ALSA output now defaults to PERFORMANCE_MODE_NONE at 40ms latency instead of LOW_LATENCY at 16ms. LOW_LATENCY capped the AudioTrack buffer capacity, so underrun recovery could not grow it, causing crackle/dropouts on bursty streams. An unset performance-mode env var now resolves to NONE; low_latency stays an explicit opt-in. PulseAudio default latency raised from 40ms to 144ms.
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Jun 23, 2026
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ALSA output now defaults to PERFORMANCE_MODE_NONE at 40ms latency instead of LOW_LATENCY at 16ms. LOW_LATENCY capped the AudioTrack buffer capacity, so underrun recovery could not grow it, causing crackle/dropouts on bursty streams. An unset performance-mode env var now resolves to NONE; low_latency stays an explicit opt-in. PulseAudio default latency raised from 40ms to 144ms.