We have a 43" TCL Smart Roku TV. We watch Dish(HDMI 1), PC (HDMI 2), Netflix (TCL input menu), Prime (TCL input menu), OTA Locals, Smart View (cell phone WIFI), and Roku channels (TCL input menu). Dont have any issues with any of the above either. IMO, our 43" was a fairly inexpensive upgrade over our OEM 36", and having all of its features is nice too. The only thing I dont like is the TV eye in then bottom center which will blink if the TV is not connected to wifi.
We also have a Logitech Harmony Remote 650 that we programed the TCL commands into it (along with dish Vip211k, Furrion DV3300 Reciever, GD Fireplace, Heat Storm IR Wall Heater). All work great.
Do agree, the TCL remotes have some light functuonality. And programming the Harmony remote with the TCL remote takes some finesse. But, we programmed our Harmony and it works great for all programmed devices..