Question Songren 144Hz monitor is not looking like it's actual 144Hz

May 7, 2019
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I bought monitor, It's a chinese brand named Songren, dunno what model. I can tell only specs: 144Hz 2K, 24 inch

PC specs: i7 6700K
Gigabyte GTX 1080Ti OC
16GB DDR4 2666Mhz

Cable: DisplayPort (Comes with monitor)
Checked it with ufo test and it says that I have 144Hz, but UFO on the top is'nt moving smoothly. Should I try to buy new cable? Or they sold me a broken one (monitor)?
 

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