Extremely High GPU Usage Looking at/towards or Walking in Forest Biome

Whenever I look towards the forest biome, my GPU usage sky-rockets.

Much to the point where video that I am playing from YouTube in my browser starts to lag because the GPU usage hits 100%.

When I look away from the biome, my GPU usage goes back to normal.

It happens even when the biome is obscured, so by just looking in the direction of the biome.

I have also attempted to use OptiFine, but the issue persists.

I recreated the world that I am playing in, and the same thing happens.

My base is right next to the biome.