there are some other stuff we could try, i will explain here so when you read this you can try yourself and see if any of this helps.
after doing 1 of the steps, try to see if improve, because if u follow all and the issue is gone we wouldnt know which one helped.
while in your shadow, click the menu (the icon in the top-middle part of the screen) and press simmultaniusly Windows key+alt+i to bring the debug stats.
in the network tab try to set the bitrate manually to 50mbps, try to not set as full even if ur network can handle, we are just troubleshotting.
try network - advance settings - change to TCP
video & display - go down all the way and change the decoder to FFmpeg
if nothing of this works, log in your shadow and click on restart streaming o win key + alt + R wait few seconds to see if is more stable