What I have tried in the past is run one pd for audio and another one for GEM stuff, which worked rather well. I wonder if it would make sense to do the same with 2 pd instances doing audio, and exchange audio between them. Maybe I could try that with Jack. But I think the latency will be doubled, because the buffers of both pd's would add up...?

might depend on whether you are chaining effects (série) or adding effects (parallèle). If what you have can be summarised as two subpatches both connected to the same [adc~] and the same [dac~], then you can put each subpatch in a different pd instance, and patch the rest with JACK, is that right ?

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