oh yeah sometimes mine does that too. i have 1440p and 1080p hooked to the dock. sometimes they struggle but i think its just driver issue so i just rebooted the deck and its running normally again.
once you running more than 1 monitor. you can never go back.
this is a good idea, although i try to not have any hardware creep if i can help it as i mostly used my main pc at home and stream it to my deck. if no other option works this might be my final solution. thank you for suggesting this.