Cloud gaming frame rate is TERRIBLE with disconnects

[Wrongtree]

On XBox, I'm running wired Ethernet using a 3 foot cable from my router. My internet is 483-525 Mbps, with 11ms ping, 2ms jitter. I'm using 5GHz and my Xbox is port forwarded with NAT OPEN. No other devices using internet (except my phone).. Yet, my screen is constantly scrolling and pixelated and as of last night (and this morning) I keep getting connection errors.

Are there ports that I can open for this game? Even without the game being directly ported, there's no reason for how bad this is. I get pixelation with just head movement. Even opening my map and scrolling on that makes my map pixelated.... Moving a stationary picture is easily pixelated.... It's virtually unplayable.