Yeah, as i said above it’s kinda slow, yes. I’d wouldn’t choose it for “main HA screen” in any room, but rather as a light switch with a side function of showing some more stuff (like room temperature, climate setting…). It’s not that bad to returnit, though, if you ask me… it IS usable. But, i’m testing Guition lcd now, which is faster and cheaper (30€ s 70). It doesn’t have physical buttons, though, it also lacks onboard speaker. But for 30€ it seems a real bargain.
Tablets are way more flexible, and, as said, they can be nicely integrated into a wall with the help of 3D printer, or with some precision wood work if 3Dp is not available.