How to revert the speech to "updated" text?

I recently ran some updates on my phone.

But now, the speech to the text is unstable. It is worse than it was, any small pause and a "." Is automatically inserted. By itself, you can't turn that off. He doesn't understand more words now. Very very frustrating

How can I revert this to the previous version that really worked?

(And why would they release an update that makes things worse?)