Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Since you posted a screencap, we can't see what your monitor displays; but even on an 8-bit display like my ZR24w, there is minimal banding in BC2. It's probably a limitation of the game engine and the way it blends screen space effects.
Programs like Photoshop render smooth gradients using dithering in 8-bit per channel images; it looks like BC2 and MS didn't utilize this .