User media video quality

Can anyone tell if we can improve camera feed quality, I'm using Logitech Brio 4k but still it's pixelated on edges.

this is my code -

try {
const constraints = {
video: {
facingMode: 'environment',
width: { ideal: 3840, min: 1920 }, // 4K resolution as ideal, 1080p as minimum
height: { ideal: 2160, min: 1080 } // 4K resolution as ideal, 1080p as minimum
}
};
const mediaStream = await navigator.mediaDevices.getUserMedia(constraints);

const source = createMediaStreamSource(mediaStream, { cameraType: 'back' });
await session.setSource(source);
session.source.setRenderSize(window.innerWidth, window.innerHeight);
session.play();

}
})();