Considering that this issue has been reported as a bug for nearly 7 years, I'm going to have to beg to differ. It's obviously you don't have a background in development, or in troubleshooting. If it were a hardware issue, it would be everywhere. The problem is most likely in the way that SWTOR is reading the input data from the device. Same with the other rare titles/mods you would be experiencing the issue in. It doesn't matter that they are "as different from SWTOR as you can get" because the issue relates not to the engine, but in how it is reading the data from the hardware. It was suggested a couple of years ago that disabling the smart camera would fix this. (In fact, the ability to disable it was one of the implemented "fixes" for this issue.) In testing it seems to make it occur less, but the issue still persists. Particularly when you begin moving after being still for a moment. (A key detail that further shows it is not a hardware issue, but something inherent in the client code.)