Question 144hz the monitor gets blurry and @60hz it works just fine

[teh_future]

Hi, i recently picked up a Benq XL2411T. The place i got it from sold the cables separately earlier with a computer and only had the monitor left, which i bought.
They advised me if i want to get 144hz refresh rate i need to get a DVI-D dual link cable which in this case the only one this monitor supports. It's had a vga/dvi/hdmi slot.
Right after i got my dual link cable which was a 9usd Chinese cable i received the alert from the monitor that incorrect cable, and to use the cable that came with the monitor, only if i change the refresh rate at 144hz and the screen goes blurry right after all the icons and texts are not readable. Right after i took the cable back to a local store where i told them my issue they gave me a refund and i got a different branded one from the same store. Kongda Dvi 25pin 3 meters long 24k plated gold and supports 1920x1080. Now it has the same issue although they charged me 20 usd for this cable since it's "better". Can someone help me which cable can support 144hz at 1920x1080 and be compatible with benq XL2411T monitor.

My setup is::::
GPU asus 1070Ti strix
CPU i7 9700f
RAM 16gb Hyperx
mobo h370-i
psu 650w evga
500gb ssd

 

[drivinfast247]

The place sold you an 8 year old monitor. Take it back and get your money back. Go to a different store with less incompetent employees. Use the money to buy a monitor that accepts Displayport.