The game will lock up and freeze after about 5 minutes of flying on 2.0 rendertarget in the SteamVR config. If I set it to 1, then it won't crash. Also, another note, 2.0 rendertarget in the config file looks better than 2.0 on the in-game slider. If I use the in-game slider, all is fine. Game works normally. Odd.