by setting up a camera rendering to a render texture with the color format set to "ARGB Float" it will crash the game when the camera sees a vrc portal.
it is very constant and only crashed when the vrc portals are seen so far.
this has only been tested in a world environment and has not been tested on an avatar with a camera attached.
the error.log says "VRChat.exe caused an Access Violation" i can send error logs but since its easy to recreate you should be able to test it locally.