based on my recent experience on tweaking almost all components on different ROG mobos, my conclusion is that "rock stability" = manual settings in BIOS...
There is no two mobo, CPU, memory, GPU, etc. exactly the same, they're all a little different (due to today's manufacturing limits)... so, when it comes to stability, no matter if it's at stock or OC'd, the original presets may not fit to all... - hence my idea for manual settings...
The RIVE is meant for the enthusiasts, it's a high end (perhaps the top) mobo designed specially for OC'ing. This means that a lot of features it has are open for users to change... it's up to users how they want to set it up... In contrast, mobos like from the workstation series, are really designed for reliability... can not change/setup so many things, but they're running strong...
So, my "magic recipe" is to take your time and learn your system! Experiment it's limits, what each component of it can do... then, when you know the limits, you will be ready to look for "rock stable" settings...
🙂Also, you do have to get a better definition of "rock stable"... Stability is a very subjective thing... I was there too, thinking that 24 hours prime95 will give the definitive answer... and I did changed my mind! Mostly because listening and experimenting things what I found on this Forum...