AW2720HF, flickering when G-Sync is enabled

hi, today i've noticed that my screen is flickering when g-sync is on, To be honest i've already seen it flickering but i thought it was a bug from my games or something like that. i tried using another displayport cable and ive still had the same issue when i tried disabling g-sync the flickering stopped. I need g-sync thats why i bought this screen so i wanted to know if there a fix for it or something?

Regards