Streaming latency

Client TTFA starts before the HTTP request and ends at the first decoded nonempty SSE audio chunk. Standard Qwen emits one buffered recording; this is not incremental synthesis. SSE transport excludes browser playback buffering.

Run	Engine	Checkpoint	Incremental	Calls	Realtime speed (×)	Median TTFA ms	p95 TTFA ms	Median RTF	p95 RTF	Errors
20261025-050404-08222176	faster	0.6B-CustomVoice	True	100	2.79	303.8	353.6	0.356	0.396	0
20261025-050404-08222176	faster	0.6B-Base	True	30	2.89	312.5	364.4	0.347	0.361	0
20261025-053632-9d5b8428	faster	1.7B-CustomVoice	True	100	2.51	327.2	375.1	0.397	0.430	0
20261025-053632-9d5b8428	faster	1.7B-Base	True	30	2.61	341.7	386.8	0.382	0.407	0
20261025-053632-9d5b8428	faster	1.7B-VoiceDesign	True	100	2.46	328.3	372.8	0.406	0.438	0