Yes, overscan can be easily turned off on your tv (HD size 2 or something like that). Panning stuttering can be one of the two factors:
1. 24p material (films). You will have to force your PC output 24hz and configure your tv to enable 24p mode.
2. Compression artifacts. Panning scenes require a much higher bit rate. If there is not enough bit rate during compression, it will jump over son frames.
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