Hello, I bought 50" Q60T in November of last year, and weeks after buying I discovered there is some flickering (maybe it’s called something else) in upper half of the screen (mostly left upper part) which happens in every input and every app, it’s not so easy to notice but it’s there, and it happens for like 2-3 days and then disappears for 2 weeks and then it’s back, I used the warranty and sent TV to service but they didn’t found any issue, so I’m wondering what is the problem? Kinda like some blinking that you can most easily notice in situations when most of the screen is the same colour.