Now these aren’t going to be 1080p or anywhere close, but if you need a way to get screenshots, This will help! First, take your screenshots. Next, go view the files in Halo, then go to game DVR and record a clip of you viewing the screenshots. You can screenshot the individual frames to get the screenshots via your computer or phone. Hope this helps until we get working file share 
Nice! Better than some of the off-screen photos I’ve seen around.