Purple screen fix with physical camera

[fire]

Thanks Saracen!

Attempts to fix the purple screen bug when in flat mode. Has not yet been tested in VR.

Has been tested in both vr and desktop. Trying to test from Github actions now.

Test Plan

1. From the project manager click run will run in vr mode
2. From the editor play menu this will run in the desktop mode

[fire]

Some screenshots

[fire]

Testing the github action build shows that the player gets stuck in the ground, but the build works in the editor, and it is a improvement over a purple screen on the desktop because it shows the view.

There are other bugs I found:

1. rendering is slow 11ms which is 3 ms above 8.3ms
2. sometimes the scene is too dark and you see a black screen, but it's merely too dark.
3. Desktop fov (like the camera is fisheyed) is wrong
4. VR looks fine