I run my video player on Windows 8 pro in Ultrabook Core i7. The cpu usage to run 1 player is 7%, to run 2 player is 14, but to run 3 player is 50%, to run 4 player is 80%. It is odd that the cpu usage is 3x more from 2 to 3 players. Does this mean Ivy Bridge and driver only allow two hardware accelaration for video decoding in two separate tasks?
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