I have a theory that when you reach 320, exotic engrams will decrypt at 320, what do you all think? Also, I have seen some confusion on the forums and in the community, this is to help clarify: If you are under 300 light, exotic engrams will decrypt at 290 light. Between 300 light and 310 light, exotic engrams will decrypt at 290 with a chance at 310. From 311 - 320 it seem they are guaranteed to decrypt at 310. (I opened a bunch myself and they all decrypted at 310)