I know, I have read on the corona forum about this memory. The only thing that puzzles me is that my second computer (2x XEON E5-2696) in every benchmark is a lot slower, but when it comes to the corona amd 2990wx definitely loses. For me, the conclusion is very simple - it is not memory problem in my case, because in other tests the processor counts without major problems.
For me, corona render makes AMD 2990wx so slow, but I do not know what the exact reason is. Do you have any other explanation for this phenomenon? Why exactly corona causes such a problem?