Panorama sometimes spin much faster/slower while loading a world

When loading a world, if you're on fullscreen mode it will causes the panorama to spin much slower, while in windowed mode the panorama will sometimes spin much faster.

Steps to reproduce:

1. Enter any world, either while in fullscreen mode or windowed mode

2. Observe

Expected results:
Panorama spin at the normal speed.

Observed results:
Panorama spin much slower/faster than it should be.

Note:
after further testing, the panorama will also spin very fast when in windowed mode (infact, the panorama inside Windowed.mp4 spin slightly faster than it should be), tho this does not always happens, I've updated the summary and description to reflect the current issue.

Also, this seems to only happens when VSync are turned off or if you has a display with a higher refresh rate (above 60Hz), settings the game framerate to 60 FPS or activating VSync will make the panorama to spin at normal speed again on both fullscreen and windowed mode.