Hi Monkey_Man,
to be fair, my unit is still working reasonably stable. And overall I'm quite happy with the MOTU hardware. With iffy I meant:
- last driver update was july 2017, since we've had 2 major OS releases and pinned messages on MOTU.com about OS compatibility, but no new driver.
- since High Sierra, I get occasional driver crashes with a loud pop / hanging squeel. Suggested workarounds on motunation.com have not been helpful so far.
- Motu audio setup software has been crashing quite regularly.
- CueMix less frequently crashes but also hangs or is not responding to a freshly booted 828
- Thunderbolt connection crashes bootcamp (latest windows driver is from 2015)
- When switching from bootcamp to macos and back audio levels are all messed up
Above problems are an inconvenience mostly and I didn't loose any recordings, but I'm anxious about outdated drivers, messages from Apple's 64bit "programme", and reluctant to update my OS.
Regarding Kemper, on of the problems of Motu Audio setup regularly crashing is that switching the clock source sometimes crashes my audio system completely. I usually set my 828x as a SPDIF clock slave of the Kemper for recording sessions (which works well). Then when I switch back and select Internal as a clock source again sometimes my system freezes. This is new since High Sierra upwards. I was hoping to circumvent this issue by setting the Kemper as slave, but alas, as I found out in this thread, this cannot be done.