So I tried a few things over the last couple days, and found out some things. After uninstalling and re-installing the two trouble games, they still shut off the system when launching, so I'll just delete them and never plan on playing them ever.
I played Rocket League (bought digitally), and got through the tutorial. When I got part way through my first online match, it froze, but I could still access the home menu and everything, so it wasn't a hard crash, but still worrying. Also bought Battleborn digitally and so far, I've played several hours of it, online and off, and it works fine without any problems. I also have Resident Evil 7 on disc. Game loads and runs fun, but the outside area is really muddy and ugly (isn't this a One X enhanced game?) and there was some graphical glitches in the sky. When I got inside, everything looked pretty good, but when I load up the video tape, when one of the characters wanders off in that segment, I go and try to find him, but there doesn't seem to be anywhere else to go in the house, and my other buddy disappeared too, so either there's like a missing/corrupted scripted event or I'm just blind and not seeing what to do in that part.
Lastly, I downloaded ReCored Definitive Edition from the Play Pass, and I got through the intro and everything, but as soon as I took a few steps into the actual gameplay, the game just locked up the same way Rocket League did during that match.
All of my other games that I've played so far have worked perfectly fine, including other XBOX One games I got off Play Pass, like Gears of War 4 and Dead Rising 3, as well as every single one of the Xbox 360 and emulated games on there, so what's the deal? At first I thought maybe some idiot dropped the system in transit or while stocking at the store I got it from and fucked up the HDD, but that wouldn't explain why the games still don't work even after being reinstalled onto what would be a different area of the disk. Is it even a hardware issue? This thing is brand new and I'm getting pissed that the most powerful game console on the market right now can't even run several games without problems, and that there is probably already a problem with a loose GPU/CPU or bad RAM or maybe the PSU is fucked, idk. Is it common for the One X consoles to come DOA when brand new?