Yes thank you bxyhxyh (catchy name you got

), forgot that FFT3DFilter has a 2D mode (I normally just use default bt=3,
I thought default was 1).
EDIT: I kinda like VagueDenoise() for basic 2D filtering (has an Interlaced arg too I think).
EDIT: Still, Using FFT3DFilter Interlaced=True, should remove necessity for SeparateFields, I think,