I'm having a small problem with the Switch connected to the dock, though I assume it's already been mentioned.
My dock is connected to an HDMI splitter, to which my Wii U and PS4 are also connected. If the Switch is in the dock and I'm playing, say, my PS4, the image on my monitor will go black from time to time and sometimes not even recover, kicking me back to the second HDMI port (my PC).
I'm definitely sure that it's my Switch what is causing this behavior, since I removed it from the dock, played Horizon for about an hour and had absolutely no issues with it anymore. Any ideas of what may be going on?
Also, is there any way to keep the Switch completely turned off when you connect it to the dock to charge? It turns itself on and goes to sleep mode whenever I connect it (which I assume is the root of my problem too).