Custom resolution running 120HZ ingame (144HZ Monitor)

Hi!

I play PUBG. Trying to play on 1728x1080 (144HZ) made in the CRU app. When i go ingame, my monitor only run at 120HZ in this custom resolution. I had the same problem for a long while ago, I managed to fix it, but after a driver update to AMD all my custom resolutions dissapeared, and now after making it again I cant remember the solution to my problem.

Does anybody have any idea of what I can try to do?

Thanks
duracell