Game Hangs on Startup

Every time that I've tried to launch the game on any of the snapshots the game has hung using 13% CPU and around 500K memory on javaw.exe. It doesn't crash, it just sits there, forever. I've tried updating my GPU drivers, I've tried updating java. I tried getting rid of every resource pack, and I even deleted my entire .minecraft folder and reinstalled the game. Custom resolution and all other options are also disabled. I've looked through tons of bug reports about this but nothing fixes this for me. Minecraft 1.12 and lower work just fine. Here's my log:

[02:32:14] [Client thread/INFO]: LWJGL Version: 3.1.2 build 29

 

and that's... it. It just stays there, forever.

Really bummed as I was looking forward to playing 1.13.

Again, I have no resource packs and have a completely new installation.