You can pick a custom keyboard shortcut, and you can decide to simply press that shortcut instead of pressing and holding it.
If your devices only support up to 4K at 60Hz, a "premium high-speed" HDMI cable (18Gbps, HDMI 2.0) is perfectly fine. Again, just avoid really old or thin cables. Early HDMI cables (HDMI 1.4 or older ...
Each of these models is great now, able to handle the vast majority of tasks that I throw their way. And yet, I still find ...