I'm running zwift on 4k TV (Samsung NU 6900 55inch bought $320 last black friday) on 4K settings. The Tv is connected via hdmi to desktop computer. I put the TV on the floor, because this is the only way to see your watts on such tv being in an aero position. With big projector you will have problems with watching your watts because it will be much higher than your eye line(unless you have extreme upright position, or road bike)