ALSA - PCM Underrun Issue

We're encountering a PCM underrun issue in Interleaved Mode while playing a single-channel audio through Alsa-lib. The error message "(snd_pcm_recover) underrun occurred" is being displayed when writing data to the speaker.

Here's what we've attempted so far:

1. Successfully played the same audio using aplay.
2. Generated complete buffers from text-to-speech engine and played them without issues using alsa-lib.

The problem arises when we simultaneously generate audio buffers from a Text-to-Speech Conversion engine and feed the data to the speaker through alsa-lib. PCM underrun occurs intermittently in this scenario.

We are using a sampling rate of 22kHz. Are there any specific ALSA configurations or settings that can be adjusted to prevent PCM underrun in this context?