Oke, so the nerd in me has been testing a bit more and I believe I have come a bit closer to understanding the issue.
- Uninstalling the Samsung software did not solve any issues. However, I will run the ssd without the software anyway. "If you don't need it, don't install it".
- I tried setting Mac OS in "Do not disturb" but had no impact. Same errors occur.
I then tried to hook up my Motu M2 to the OWC through the tb (usb-c) port, and so far the glitch has not occurred. I will of course test it over a longer period of time to see if anything happens, but this probably helps narrow down possible errors. At the moment I can think of two possible issues;
1. USB A ports on OWC Thunderbolt Dock might have an issue running a soundcard through, either alone or in combination with Fireface. I could possibly test this by doing two things. Get a firewire to tb (usb-c) adapter and use firewire from Fireface to usb-c on owc, or I could also use a usb-c to usb-a adapter on the Motu to see if hooking it up to a USB A port on the owc recreates the problem (not sure if the last one will work).
2. There might be some sync issue between Fireface and Logic (both are set at 44.1). I think I need to test the Fireface more extensively with Studio One to be absolutely sure the error do not occur there. This could possibly eliminate a driver issue from RME side.
My hope is that I possibly can use Fireface UFX with Logic without any hiccups. I will continue searching but probably have to get some adapters before I know more.