When manually rendering a camera's output by disabling the camera component and calling Camera.Render in LateUpdate or PostLateUpdate the player appears halfway in the ground where full body has their hip at the avatar root/player origin.
  1. Disable Camera Component.
  2. Call Camera.Render in LateUpdate or PostLateUpdate with Udon.
  3. See issue in output texture.
The code does nothing more other than run Camera.Render in one of the update loops. Fixed Update is buffered to only render when one Update loop passes. Not every FixedUpdate, but only FixedUpdate loops after an Update.
Test World: