Hi Nertea,
I'm using SSPRx with snacks! (ksp 1.6.1, SSPRx 1.1.0 and snacks! 1.11.1) and I found a config error concerning snack processing.
As you can see, the PXL-R4NCH-3R snack production is one-fifth of the PPD-F412M for the same amounts of input resources.
I might also suggest a slight rebalance for the PXL-R4NCH. Since it's larger and more expensive than the PPD-F412M, it should produce a bit more snacks.
Thanks.