Unusually high GPU core frequency usage when looking up

Hello,

I've noticed unusual GPU usage when looking up and in certain conditions down. When looking straight up the issue occurs every time.

Steps to reproduce:

1. Load any 1.16.5 or 21e16a world (single player)

2. Wait for the world to be generated

3. Look straight up and hold for about 3 seconds

4. Notice the GPU SCLK value maxing out and staying there for as long as the position is maintained. As soon as the angle is shifted to a lower angle, the core values drop down to more moderate, fluctuating values.

Hope I provided sufficient information.

Thank you.