MOSS-TTS-Nano's speech rate control and CPU streaming performance.

This issue highlights two critical performance and feature gaps for MOSS-TTS-Nano, directly contradicting its "realtime speech generation" and "CPU without a GPU" value proposition. First, the user inquires about speech rate control, a fundamental feature for practical TTS applications. Second, the explicit mention of "CPU streaming mode being sluggish" ("比较卡顿") and the provided performance metrics (4s audio taking 11.6s elapsed time on 4 CPU threads) confirm significant latency issues. This performance deficit on CPU, combined with a lack of basic customization, severely limits the model's utility for real-time interactive applications or scenarios requiring dynamic speech output. The market implication is that the model, despite its small size, fails to meet core performance and feature expectations for its target use cases, hindering adoption in applications where responsiveness and control are paramount.