Games play on 24p at Full Screen

justmark81

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Feb 5, 2013
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Since yesterday i have reinstalled my entire PC and today i wanted to play Rocket League again like i always did before.

I duplicate my PC screen that is connected to a Samsung TV and it all works nice with 1080 60p.
But when i start the game, it changes to 1080 24p!

When i goto options and set it to windowed borderless it jumps back to 60p

It never did this before. What is the problem here? Thanks!
R9 280x video card. Samsung TV
27"144hz PC monitor 1.4 HDMI cable