Different consensus rules is badly expressed by me, using different implementations to Core favors consensus, you avoid dictatorship and manipulation of the rules by a group.

The example is that Core does not filter spam properly with either the datacarrier or op_return option. Knots filters it. 

 Thank you! I'm currently resyncing my node. I set the dcache to like 4GB for initial sync but my system only shows itself using like 2GB. Do you understand why that is?

https://m.primal.net/LbLj.png  

 Give it time, it will end up consuming it.