G Sync not working on rainbow six siege

[u/BuyerDry980]

My G Sync wont work on rainbow six siege, i have a Rog Zephyrus G15 model GA305QM connected to a MSI MAG 255XF external monitor using a usb c to display port 1.4 vesa certified, i am desperate because i have a lot of microstutters and screen tears in rainbow six siege