If my computer goes to sleep, the Samsung monitor I have will be distorted and non-functional when the computer wakes up, for a duration of time relative to how long the computer was asleep (i.e. how long the monitor wasn't receiving a signal and was "off"). I've missed meetings at work because I cannot use the monitor for literally half an hour. Of course this started happening just after the 1 year warranty period ran out.
My Samsung ~58" TV has black lines forming across it after just ~3 years. The lines are gradually increasing in number and strength, so I guess I'm going to be buying a new TV screen soon.
A family member has Samsung oven (???) which has its interior light blinking on and off intermittenly when you open or close the door. The oven's LED screen is like 10% brightness. Their Samsung fridge is the worst-designed fridge I've ever used, making the approximate worst possible use of the space the appliance takes up. The best is their Samsung microwave: when something is done being microwaved and you take out the food and close the door, the microwave runs again for ~1 second. Like... really though?
There was a time Samsung made some good stuff, but for me they are not worth giving a moment's consideration anymore, sadly.