Also the fps on my Nvidia graphics card is really bad in games.
Are you sure you have the official Nvidia driver installed? Most Linux distros, if not explicitly configured otherwise*, use the open source “nouveau” driver by default. Since that driver doesn’t support some vital aspects - such as frequency scaling - of the hardware, the performance is bad.
*Some distros, like Pop! OS and EndeavourOS, offer a “Nvidia install”, meaning that the official driver will be installed and configured upon OS installation.
Are you sure you have the official Nvidia driver installed? Most Linux distros, if not explicitly configured otherwise*, use the open source “nouveau” driver by default. Since that driver doesn’t support some vital aspects - such as frequency scaling - of the hardware, the performance is bad.
*Some distros, like Pop! OS and EndeavourOS, offer a “Nvidia install”, meaning that the official driver will be installed and configured upon OS installation.