[FR] AudioBuffer based Oversampler

Thank @PluginPenguin
I’ve explained what I’m experiencing here: Sidechain and ProcessContextReplacing

Basically, passing a buffer having the content of both the main and the aux busses is leading to some issues, especially when Input Monitoring is enabled on any DAW. No issues if we work on processBlock using the AudioBuffers instead of the Blocks, but we’d lose the oversampling.