@serius: Bethesda only needs to make sure the game runs on type of CPU and GPU with the console versions. The PC version runs on thousands upon thousands of different combinations of CPUs and GPUs, and their driver versions. it's almost impossible to test every single setup someone could have so most PC games will launch with some errors. (I had to download the beta patch for Metal Gear Solid V when it came out)... But that doesn't excuse the problems of no FOV slider, KB+M not working (if a controller is plugged in I heard), and forced mouse acceleration.
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