OP here again. I've managed to circumvent this, though i'm not exactly sure how.
To clarify, I still get this issue, but it is far less frequent. In all honesty, I think its just that DA:I doesn't support the AMD Radeon drivers, because i've noticed that lighting of hair on some characters is really glossy and i've also noticed certain armors have very weird lighting effects.
Like I said, I can play the game fine to an extent. I've got about 15 hours in and this error will ocassionally pop up. I think what I did was:
1. Locate the Origin Games folder in your program files.
2. Go to the DA:I folder then go to _Installer>directx>redist
3. Then run the file named DXSETUP.exe
I did that and tried running the game and now at the stage where I described above. I'm not sure what that did exactly, whether that installed an older directx or a newer one i'm not sure, but i can run the game. I still think its just poor support for AMD cards for this game.
Still looking for a solution though. I may try reinstalling drivers I guess.
EDIT: Read the above posts. Is it possible the old drivers are also causing the glossy hair problems, and not just that it isn't optimized well? If so, I may consider doing this. Though I haven't been able to find the newest drivers for AMD, I always get redirected or need to buy some program.