I think waiting for a space to be typed so you know the newest typed chunk is a usable discrete piece of data along with a small delay for when no space is type

I think waiting for a space to be typed so you know the newest typed chunk is a usable discrete piece of data along with a small delay for when no space is typed would make this work better. In thinking about how this compares to youtube instant, I'm not sure an autocomplete would work well at the global level without more thought and refinement.