Same here. I even use ellipsis for emotional pauses.

“This… changes everything.”

That tiny pause makes the avatar pause naturally before the next phrase. I found that exporting audio as WAV instead of MP3 keeps consonants sharper. “P”, “B”, and “M” sounds are critical because lip closure timing depends heavily on them. For YouTube automation creators in 2026, shorter syllables work better for Shorts and Reels. Fast pacing keeps retention high, but if you go too fast, AI lips become unstable around jaw movement.

A good trick is generating the voice at 95% speed instead of normal speed, then slightly increasing playback speed during editing. The rendered lip sync remains smooth while the final video feels more energetic.

My workflow now is basically ElevenLabs for voice generation and HeyGen for animation. The secret is controlling punctuation manually. If you add commas and short sentence breaks correctly, the avatar becomes dramatically more realistic because the facial pacing changes naturally. A lot of beginners dump giant text blocks into TTS and wonder why the avatar feels dead inside.