I’m sure most people that game with this tv series has had this issue or similar, but I had to make my own post to get to the bottom of this. I am using a 3090 strix with at 1200w psu, ryzen 7 5800x, with more than adequate cooling through my pc. I’ve troubleshooted and tested every possible “fault” that could potentially make this my pc’s issue and not the tv. I have used 4 different certified 8k 48gbps hdmi cables from multiple different brands. I am using hdmi port 4 and have tested with others. I’ve tried a different brand of tv (Sony x90j75) and have had no issues whatsoever. This issues is sporadic, it can happen whilst gaming, or even simply sitting on the desktop or watching YouTube etc. I like everyone else with this specific model spent $5000Aud or thereabouts on this tv to be able to play 4k ultra games at 120hz with hdr on a big screen. Samsung do not sit there and tell me to turn off hdr or swap to 60hz. I won’t do that. I want what I payed for and won’t settle for less. If anyone has a fix for this please I’m begging you let me know. I’ve had it with Samsungs unhelpful troubleshooting “advice”.
