XMP Probs after addition of 2 slots

[music4mybumhole]

I have been running 2x8GB of HyperX Predator 3200 for a couple of years with no issues (XMP enabled).
However I have just added 2 more of the same and have BSODs for memory.
At first I think this was because adding the 2 new sticks reset the XMP to off, I changed it to profile 2 (for 3200mhz), but this was really unstable and giving the BSODs.
I've had to revert to profile 1 (2933mhz) which is now stable.
I'm pretty sure when running the 2 sticks I was using profile 2 for the full 3200mhz, can anyone help with why I can't now use that with all 4 slots?

Thanks

 

[HRL]

Ryzen? Might need to bump up the voltage on the memory controller if my memory serves me correctly.

It’s more taxing running 4 sticks than it is 2. Pretty much the only reason I’m looking for a 2 x 16Gb kit rather than the cheaper 4 x 8Gb kits.

 

[Tetras]

Zen+ seems to have this limitation with 4 sticks, where it needs 2933.