So I updated today to "Crimson 16.15.2111-160314a-300497E." And I'm pleased with the Crossfire performance in Xcom 2 now. But I can't disable the crossfire logo at the top right of the screen. It's covering up in-game icons, and is generally an eye-sore.
The tick-box to disable the logo seems to have disappeared in this update for some reason. Not that the tick-box worked properly to begin with, it would keep re-ticking its self even after applying updates.