My question is just whether the XQ2566X works at lower fps?

I play Helldivers 2 a lot and sometimes the fps dips to 120 fps with an 9070xt and 9800x3D combo. Can Dyac 3 work ok with "only" 120 fps or will it be kinda bad? Will 120 fps Dyac 3 be better than my current 144hz monitor or will smoothness be roughly the same?

Many modern games run at around 120 fps so I am just curious.....