Dynamic / Unlimited Video Bitrate (5GBps Link)

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Is your feature request related to a problem? Please describe.

Using 1920x1080 @ 240FPS (roughly 3Gbps)
I got a dedicated 5GBps connection from one high-end PC to another and want to make full use of the connection.

I have put it all the way up to 500Mbps and enabled YUV 4:4:4 but I am not sure how much it "improved"
I read up on it and it appears that I am covered with 500Mbps for most cases but I want to know how I could make use of the remainder of the bandwidth potentially to improve image quality.

Or maybe have some arbitrary method to show image quality.

When/how do I know it's running at ideal already?

Describe the solution you'd like
Allow Video Bitrate to be dynamic / unlimited to match the bandwidth we have to improve image quality.