The game Wild Terra 2 New Lands used max power of your GPU, for the best FPS (Frames per second). If you have a good GPU, you can turn on Vertical Synchronization (VSync) - GPU load will be much less.
In the main menu alrady used full graphic engine and high loading of your GPU. You can find similar usage in the game Witcher 3 Wild Hunt:
The different profiles can disabled some layers of effects, like shadows (for quality profile Low and lower). It can increase your performance.
The developers working for optimisation to present to you a good FPS and less power usage for your GPU.