So I'm running dual 380x's with 16.8.3. Whether vsync is on or off, I'll get pretty decent frame rates for 5 seconds or so, then the game will drop 10 or so frames. So it's basically unplayable.
Are there any settings I could change to make this work? There's a crossfire BF1 profile for an exe labeled "Tunguska.Main", but it seems to give slightly worse frame rates than running default profile, and they both stutter badly.