For Arch Linux explorers < https://aur.archlinux.org/packages/spaghettis-git >.
Note that multithreading the DSP implies that determinism is broken (related to control messages). Thus all the DSP stuff should stay in DSP chain as far as possible. It certainly will require to add new DSP objects for that. It implies also that time consuming operations can still bloat the main thread and delay control messages in a not reasonable manner.