I recently bought a new 4k TV which I have connected to my PC. I'm experiencing a weird issue in that when I launch certain games the TV suddenly drops from 60Hz to 30Hz.
The TV runs at 4k 60Hz in windows, and when I launch some games it remains running at 60Hz in 4k resolution. However, when I launch certain games, for example Doom or Witcher 3, the TV displays a brief image at the top right of the screen indicating the resolution (still 4k) and the refresh rate (now 30Hz).
The TV is a kind of no-name brand with a Samsung panel (I live in Korea). According to the specs it has 4 hdmi 2.0 ports and supports up to 60Hz refresh rate. I am connecting it to a PC running a GTX 970, that also supports hdmi 2.0 and I am connecting the two with a cable that is definitely hdmi 2.0 - so clearly the issue is not that I am running on hdmi 1.4. If that was the problem then none of my games would run in 4k at 60Hz, but some of them do, such as Shadow of Mordor and Ori and the blind forest.
I have googled around and I did not find any forum posts with the exact same issue.
Tldr; My new TV selectively downgrades the refresh rate to 30Hz when I launch specific games, but happily runs other games in 4k resolution at 60Hz. What is going on?
The TV runs at 4k 60Hz in windows, and when I launch some games it remains running at 60Hz in 4k resolution. However, when I launch certain games, for example Doom or Witcher 3, the TV displays a brief image at the top right of the screen indicating the resolution (still 4k) and the refresh rate (now 30Hz).
The TV is a kind of no-name brand with a Samsung panel (I live in Korea). According to the specs it has 4 hdmi 2.0 ports and supports up to 60Hz refresh rate. I am connecting it to a PC running a GTX 970, that also supports hdmi 2.0 and I am connecting the two with a cable that is definitely hdmi 2.0 - so clearly the issue is not that I am running on hdmi 1.4. If that was the problem then none of my games would run in 4k at 60Hz, but some of them do, such as Shadow of Mordor and Ori and the blind forest.
I have googled around and I did not find any forum posts with the exact same issue.
Tldr; My new TV selectively downgrades the refresh rate to 30Hz when I launch specific games, but happily runs other games in 4k resolution at 60Hz. What is going on?