At this time we did not have any reports of problems like yours. I will forward your message to the corresponding department so that they can test it and if there is a problem they will try to find a fix.
Thanks for your report.
Hello! I've got 3 such motherboards. While two of them had no problem booting with 64 Gb and default bios settings, one didn't boot with more than 32 Gb. I made it to boot by tweaking voltages in bios: DDR V = 1.6 V, VCCSA V = 0.925 V, VTT V = 1.1 V. And it worked like a charm! But then I decided to replace memory modules and now I have another issues. It doesn't boot with amount of RAM between 32 Gb and 64 Gb (e.g. 40 Gb, 48 Gb) beeping memory error, but it does boot with 64 Gb and with default voltages! How can it be?! I put memory modules in slots at correct order 1, 2, 3, .... and also I returned back previous modules but it didn't help. So, Intel, I need help! Or maybe I should start another topic?