This is a confirmed issue that has been seen at least on Core i5-4590 and Core i7-4770K processors, and can happen with other Intel CPU models as well. The cause appears to be a compatibility issue with OpenCV library. The issue is under investigation and we plan to fix this in an upcoming update to PCMark 8. It should be noted that the issue is fairly minor since the x86 code path in OpenCV commonly performs better than OpenCL running on the CPU, so the fix is not expected to influence benchmark scores for default PCMark 8 tests that feature Video Chat v2.
PCMark 8 crashes when I manually select an Intel CPU as the OpenCL device and try to run Video Chat v2.
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