There shouldn't be a bug, unless it's a known issue with an older BIOS version on your motherboard, and you haven't bothered to update it. Even then, I doubt there would be a bug whereby you can't overclock them both together. It's probably a memory compatibility issue, as Ryzen's very fussy about the RAM type. Hopefully A.G.E.S.A. v1.0.0.7 will fix it. Motherboard manufacturers don't have access to the A.G.E.S.A. source code, only AMD, yet it is one of the most important factors in stability and memory compatability. Keep that BIOS on the latest beta version.
So there's no bug then?I have previously overclocked both together without issue. My RAM is also Ryzen specific branded, and Samsung B-die.
So there's no bug then?
I had problem with stability when either ram or cpu voltage was too low, cranked them up.So... What causes the bug where you can either clock memory or the CPU, but not together? (Exception seems to be if you use xmp on memory then you can).
Driving me nuts.
It simply isn't a bug if it straight up doesn't allow you to overclock high quality memory certified for use with Ryzen. It would be widely talked about on forums and hotfixes issued by MSI. If they don't have a stable or BETA BIOS that fixes your issue, then wait for A.G.E.S.A. v1.0.0.7. If still nothing after that, then I would suggest there's something wrong with your board. Have you increased the memory voltage when you overclock it? I need details on what BIOS settings you've changed to emulate the XMP and overclock the CPU.
I had problem with stability when either ram or cpu voltage was too low, cranked them up.
Nope.And you're not on an old BIOS?