Since the update to iOS 17 the voice dictation on my iPad 6th gen is very slow. It lags several sentences behind and even when I tap the microphone icon to stop it, it needs another five to ten seconds to finish the text. The longer the text, the longer the time to finish the text. All was fine before the update. Have you experienced the same?
As I wrote, I don‘t have the issue on my iPhone but on my iPad.