If I understand the faq correctly, it’s possible that the EUSART bug will show up if I have 2 cores linked together, right? (with no other midi input)
Unfortunately yes - MIDI data forwarding is the easiest way to reproduce the EUSART bug. :-/
But the MBHP_IIC_MIDI module could be advantageous for your sequencer anyhow, as it allows you to add independent MIDI ports for different MIDI devices (no MIDI channel assignment trouble). Also the bandwidth is higher, because MIDI events can be sent to different devices in parallel.
However, so long only your small PC sampler is connected, this doesn’t really matter - just an idea
Best Regards, Thorsten.