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Not sure if it is a bug or just my system being quite old by now.

I tried running the game in Beautiful graphics setting, but occasionally it would feel like there was slight slowdown. So I pulled up the Windows gaming overlay to show FPS and GPU usage.

While FPS stayed solidly at 60, which is fine as I tend to run with VSync on to avoid overloading my GPU.
But the GPU would be 98-100% constantly. Same thing if I put it down to "Good" graphics. Steady 60, 100% usage.
Seems like the GPU does not rest even when VSync should limit it to only produce frames to keep up with the monitor.

For reference my system is a Ryzen 5 3600 CPU along with an NVidia GTX 1060 6GB