without interference or interruption between cores
The <ahem> *core* of the problem would appear to be that there is a reasonable expectation that an 8 core CPU can carry out eight tasks *simultaneously* - without interference or interruption between cores. This is what most people understand a modern CPU "core" to be and it seems that this AMD CPU cannot guarantee this pedigree of operation under a number of circumstances (like floating point ops, for example).
Regardless of whether you or some other random person thinks that this is acceptable or not, the cold, hard facts are simply cold and hard and rather fact-like.
Biting the hand that feeds IT
