You need to enable Compositing Pipeline in Nvidia Advanced Settings I guess (I do FULL but you can just do basic, not FULL composition pipeline). Also reopen Nvidia Settings with sudo command after configuring it, and save the settings to the Nvidia config file /etc/X11/mhwd.d/nvidia.conf so they are applied system wide and properly load with the system every time.
This is what I’m talking about (don’t exactly follow it, it is only to picture what I’m talking about) Fix screen tearing on KDE with Nvidia - Album on Imgur
It needs a reboot to properly apply these settings.