Hey, forgot to mention something that might be important.
I am streaming the 40Mbit Shadow stream wirelessly to the an Oculus Quest, on Wifi AC.
Netflix is both wired on Chromecast Ultra, and wireless on phone/tablet. Netflix causes stutters in the wireless 40Mbit Shadow stream both wired and wireless.
I just read this in another topic:
use firewall rules to add DSCP = CS6 to your game packets, this will induce them to go over the VOICE queue on WMM enabled wifi, which will give you lower latency on wifi.
Is this something that might help? I should look into how to actually do this...