Then, in that case, go for 2x16, I believe ASUS uses daisy chain for their DIMM slots. And yes 3200 CL16 should work, if you plan on overclocking it past that, go for a 3200 CL14 kit, because they are b-die (the best type of die for memory) if you can afford it. Other than that 3200 CL16 should most likely work on the zen+ architecture.