This happened to a friend of mine and myself already. Both of us are on PS4.
First instance was just before Final Steps of Faith. typing /gpose and using a gpose macro on the hotbar forced our PS4's to crash twice. The next day, nothing happened.
Today they tried it again, and it crashed them again. So far it only affects PS4 but it doesn't always do it. We both have our Draw Detail set to High if that helps.