If your Nvidia card isn’t supported anymore, by the proprietary nvidia driver, you can use the open-source driver provided by Linux.
Mostly you can use the nouveau driver provided by the package xf86-video-nouveau, on older GPU’s it is most likely this package is causing tearing and bad performance on older nvidia GPU’S, so it is better to use the modesetting driver shipped by default in the Linux kernel, to enable it you just have to uninstall the package and change the following configuration.
sudo pacman -R xf86-video-nouveau
sudo nano /etc/mkinitcpio.conf
Then go to the line
And change it into:
Save it with [CTRL+X]
sudo mkinitcpio -p linux
If you also have linux-lts installed then repeat the last process with linux-lts on the end of the line.
Reboot and your system is running with nouveau.
In some cases the video quality has a delay or glitches, especially with DRM encoded videos on services as Netflix for example.
In that case try to install the nouveau-fw package (AUR), after install reboot the system.