Here's my findings so far. This is written from memory as I am at work now.
Asus CH6 - 0902 Bios
Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black CMK16GX4M2B32
Ryzen 1700
Here's my findings.
Booted up straight away on defaults. Memory defaulted to 2133 and the system booted fine.
The system will not post using a memory speed above 2666, I need to manually set the RAM timings for this to work to boot at 2666 however the system is not stable even using these settings. Hopefully a BIOS update will fix the memory issues.
I have currently settled on the following for now:
36 Multiplier
108 Bclock
2133 Memory Setting - Which gets small boost from the Bclck setting of 108.
Memory Speeds are set on auto and it defaults to : 15-15-15-36 1T
CPU Speed is 3888 or something for which I just put in 1.35 Vcore, I will try lowering this over time but its fine for now. CPU-Z Reports 1.330vcore.
However, the CPU temperature readings are all over the place. Ryzen master reports 3c which is what the BIOS also reports. Whilst i know the Noctua D15s is a superb cooler i'm not sure it's that good
I did try AIDA Extreme and that shows 34C idle and maxed out at around 47c running prime which sounds incredibly low although more accurate than the BIOS.
I played BF1 for around 90 minutes using the above and it worked perfect. when I tried the 2666 setting on the memory, I could run real bench, cinebench but then couldn't get BF1 to load into the menus!!