There is an issue with the final boss fight on Presage exotic mission from the portal. If you select Solar Threat Modifier at 5 (66% damage), it makes the ending impossible to finish. At the end, you have to activate the 3 terminals. One of those terminals is inside a heat room. The heat room with kill you before you can activate the terminal. I ran this several times, even with an overshield and 2 solar resist mods, the room would kill me almost instantly. Please either fix this issue or just change the solar threat to something else.