Memory related BSOD when running in XMP 1 or XMP 2

[k3wlbr33z3]

I'm currently attempting to tweak my system to see just how good the performance can get and even though I selected memory from the QVL I'm running into BSOD issues when attempting to use the memory in either XMP1 or XMP2 mode. The BSOD's randomly occur, sometimes when gaming, sometimes when idle, and even though I have the system set to save crash dumps when the crash occurs they never get saved. Here is my current build specs:

Motherboard: Asus Prime Z390-A bios rev 0602
CPU: Intel I7-8086K
Memory: G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin DDR4 4000 F4-4000C18Q-32GTZ
GPU: Sapphire RX Vega 64
System Drive: WD Black 500GB High-Performance NVMe PCIe M.2 2280 SSD - Gen3, 8 Gb/s WDS500G2X0C
OS: Windows 10 Pro build 1809

When using DIP5 I can run stable with a 27-30% overclock but get the best performance overall when the memory is set to XMP2 when testing my rig with Passmark. According to the Asus QVL this memory is approved and the manufacturer has the memory listed as XMP2 but fails to run stable at 4K. anyone else running into this problem? Any help would be appreciated.

[Menthol]

Is VCCIO and VCCSA in default auto mode? Try adding .25 volts to the dram voltage, it may just be your CPU IMC struggling, they are not all capable

[k3wlbr33z3]

Took your advice and checked/adjusted settings with no change to performance. For giggles I took my IR heat gun and was checking temps because I noted a spike in my MOBO temp and noted heat fluctuations in the memory location. So I pulled and reset my memory modules and added a 40mm fan (Thanks to the included bracket that came with my mobo) and so far so good. I ran a stress test with 3dmark with no issue and no BSOD since reseating and adding the fan. Thanks for your help and will post back later to confirm the issue is resolved.

[Menthol]

Good news, it does not take much airflow in that area to make a difference, enjoy your system

[k3wlbr33z3]

Seems like re-seating the memory and adding the fan did the trick. I'm not sure if a module was improperly seated of if the extra air moving through the area is keeping the temps more stable, either way it seems to be rock solid thru multiple stress tests with 3dMark and Passmark along with some moderate gaming. Thanks for the advice, I've attached a couple pics of my rig with the side panel off in case other run into similar issues.

[Menthol]

Very nice, I have a 140mm fan setting on top of my video card at the moment, I have a pcie drive in the pcie slot above the video card which causes it to get a little warm, it also reduced PCH and VRM temp a little