Eventually.
Think he woukdv waited several days if it had been a Muslim or an illegal immigrant from Mexico? And yes, the delay matters.
It matters? C'mon man. This is not anywhere near a big enough crime that it needs a direct response from the President.
When Obama would comment on mass shootings it was largely political. Just like Trump's responses to issues involving Muslim extremists or illegal immigrants. Trump doesn't have to make an effort to score points for the other side anymore than Obama or any other politician.