That's an interesting widget you made and a great potential IoT project for this site. My TV doesn't go to sleep until my PC does. In fact, before the firmware update I had very little trouble with it aside from the inconvenience of navigating an on screen menu to switch sources, and the cheapo directional thing on the remote which is erratic about registering presses. I'm not sure if the samsung smart TV remotes are IR. There is no visible IR transmitter on the widget, but I can control it over wifi, badly, with my phone, except powering it on, which makes it kind of useless. I'm getting an LG probably. It has source buttons on the remote, and nobody I've talked to has had any problems with them (other than old, eventually defective units) that would prevent their use as a monitor. Plus the 120Hz OLEDs are supposed to be visually fantastic, although that's almost certainly true of many other brands as well. I found one for $1100USD on amazon in the 55" size I want/need for my mount. I'll buy locally though, even i pay a bit more due to me being averse to shipping those things more than necessary. Thanks for your input!
Check out my IoT graphics library here: https://honeythecodewitch.com/gfx And my IoT UI/User Experience library here: https://honeythecodewitch.com/uix