eGPU + USB device issues
@patrick_noel_tio, I'm really glad you got things working! Even if my post helps one person, it was worth writing that follow-up in October I've noticed that shutdown behavior on rare occasion with my work Mac. Everything seems to be shutdown, but GPU fan kicks into high fear. I haven't put any effort into trying to figure that out.
Quick minor update to my situation: Since I wrote that follow-up post, I replaced my laptop. Now I have a Razer Blade Stealth late 2020 (Tiger Lake, TB4) and while the shutdown issue I mentioned in that post still exists, it actually shuts down correctly about 50% of the time now. While experimenting, I found that disabling Power Management- Allow the computer to turn off this device to save power on the USB root hub devices actually makes it worse--my laptop would never shut down while connected to the Razer Core X Chroma. Removing external USB hubs from the ASMedia controller still works around the issue and gives me a successful shutdown every time, but then I can only have about half my devices connected. Still not a big deal to me, but it'd be nice if everything worked as it was supposed to. Point is: even with the new TB controller, this problem still exists. I think the ASMedia driver, while better than the Microsoft one, still has its share of issues.