Mine “suspected” setup is even more compact. No hub.
One USB link to Kontrol Audio6
Another USB link to Keylab mkII.
Pedals on the back of Keylab.
My notebook has 3 USB ports, everything on latency and glitches seems alright.
It is the classical damned bug, hard to catch.
Point is that it is making me crazy since 15 years. But now I am using professional and updated devices, I was confident to solve it…