I agree - I think the problem is mostly the dock: I have a Dell Precision and a similar dock - TB16 - at the office and a Cable Matters dock at home (with a similar peripheral setup), and the CM never gave me any trouble while the TB16 always have issues with one of the external displays not connecting (sometimes one, sometimes the other), the USB hub taking ages to init and then sometimes disconnecting in the middle of the day, and other stuff. Hard reseting the dock (disconnect power and TB cables and reconnect) sometimes helps, but not always. Also Google "tb16 xhci disconnects" for more issues and workarounds.
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I agree - I think the problem is mostly the dock: I have a Dell Precision and a similar dock - TB16 - at the office and a Cable Matters dock at home (with a similar peripheral setup), and the CM never gave me any trouble while the TB16 always have issues with one of the external displays not connecting (sometimes one, sometimes the other), the USB hub taking ages to init and then sometimes disconnecting in the middle of the day, and other stuff. Hard reseting the dock (disconnect power and TB cables and reconnect) sometimes helps, but not always. Also Google "tb16 xhci disconnects" for more issues and workarounds.