I found this TTS program from 2003-2018
https://github.com/festvox/flite
It fast on a CPU, and it generates pretty good audio
https://voca.ro/16czryMpnexI

I'm wondering if anyone here uses other TTS programs.

I tried several models with https://github.com/coqui-ai/TTS and they were all less consistent than this humble little Flite program. Not to mention, the also consumed wayy more resources. Flite can work on mobile.