Did DeepSeek get dumbed down?

I've noticed a serious degradation in the responses in the last couple days. It's making really strange mistakes. I understand it's going to be subject to errors but not only is it making mistakes it can't accept corrections within a chat.

Before if I pointed out an error it would avoid it for the rest of that chat. Now it continues to repeat the exact same error.

It has also been hallucinating very aggressively in ways that it wasn't before.