Here is a game capture card that lets you capture gameplay in 4K60 quality without a computer. The Elgato 4K60 S+ can record unlimited footage to your hard drive or a SD card. It features zero-lag passthrough. The device is compatible with top broadcasting apps such as OBS Studio.
The 4K60 S+ has a capacitive touch sensor button for recording. It has audio input to capture all the audio. It also automatically adapts resolution, bitrate, and file format to your console. It has max bitrate of 140 Mbps.