Multi Encoder DSP (global tab or for each encoder?)

[Solid-State]

This is something I've always wondered but have never bothered to inquire about.

If I use Multi Encoder, when I select DSP effects (in this case playlist writer and meta Replay Gain), should I be adding those DSPs whilst using multi encoder via the multi encoder DSP tab or show I drive into the encoder itself and add the DSP there? Does it even make a difference on how it's done?

[Spoon]

If it has to be done for all encoders do on the global tab, as it will be faster (otherwise the effect runs for each encoder separately)