Question Is this a g-sync compatible monitor?

No, it is a Freesync monitor, but should still (At least to some degree) work as far as adaptive sync goes since Nvidia is now supporting Freesync on GTX and RTX graphics cards through their driver support. I doubt it will work "as" well as a Gsync display, and you probably want to investigate how well that unit will work with it. But no, that is not a Gsync monitor.