processing dual amp mode - sleep/hibernate muted amp chain

I'm surprised this doesn't happen. Or does a DAW have any, ah, input on app resources? As is it reduces over-sampling by about half when rendering in Reaper.

pipelineaudio

There are some VST flags to inform host of offline/render state or the other way around, to switch to ridiculously high oversampling modes or other conditions if that's what you are asking

I'm saying when setting the splitter to one amp, Bias FX should get cued to act as if they are switched out. They aren't just off. System resources in any fashion are not diverted to them.