It's never going to sync. You're suggesting that a man speaking in Russian is going to have the sync up lip movements with an AI translator? Nonsense. They used an AI translator and voiceover so you don't have to read subtitles. You can listen to audio. It's a convenience. Just as an aside, Putin understands English very well, like most Europeans, but he's not comfortable representing his country speaking unless it's in Russian or German (he served many years with the KGB in the country). You'll see him respond to English questions without waiting for a translation, but he'll always respond in the two languages he knows best.

Either you trust the translation or not. Without a source, it's impossible to assess other than to listen to the message and see if it's consistent with other things Putin and his administrative team have said.