I don’t know Gnome so I can’t tell you where to configure stuff within Gnome, but for me the rule is to disable Gnome’s built-in Vsync settings if any, and enable Full Composition Pipeline in the Advanced Settings of your Nvidia X server settings like I described here Possible solution for Tearing (Nvidia proprietary) and make sure to write the settings to the Nvidia X config file and reboot.
//EDIT: but I’m not even sure why you said you had screen tearing, because your image doesn’t show that, it shows a messed up interface.