since the mm acts as a midi host, and i believe the digitakt is a host as well, they won’t work when directly hooked up together via a usbc male<>male cable. you might need a usb-din adapter such as this one to act as a go between:
eidt: also having a ‘per patch buffer/sample rate’ is on the future features list. once we have that feature and users can set what the ideal buff/rate is for each patch, we won’t have users running into cpu overloads when running patches that they download from wherever.