Monitor out of range whenever I play on fullscreen

Hi, Whenever I try to play on fullscreen (which would greatly help out my fps) my monitor tells that the game is on 150hz and it is out of range sicne my monitor is 60hz. Playing with bordeless works fine but it would be so much better if I could play on fullscreen since it could help stabilize my fps and ping. Any solution to this? Thanks in advance, BenCoHU {{champion:202}}
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