I installed my new cpu and i noticed that I don't have the 1920x1080 (144 hz) option anymore when I play on -dx9. Is this a new technical bug? I've set the refresh rate in 144hz in display settings in NVIDIA control panel but still not. However playing in -dx11 gives me the option in 144hz but everytime i alt tab it gives me a 3-second lag.

is this gpu driver fault or game's fault?

this is the screenshot https://imgur.com/a/KuXr7K4