I got my TB3 working after following the steps by papillion12 at the top of this thread, but I still can't figure out how to get hotswaping to work. I'm using my TB3 port for my MOTU 828es thunderbolt 2 audio interface (with the Apple TB2 to TB3 adpater). The only way to get my Hack to see the 828es is turn it on first before starting up the computer, and sometimes that doesn't even work and I have to restart the computer again. If I turn off the 828es while the computer is running it'll no longer recognize it when turned back on. I've tried searching the problem but maybe I'm not using the write words to describe my problem.
Any thoughts?