Minecraft only uses 45/200 watts while game is running at only 50 fps

As you can see on the screenshot attached, Minecraft is only using 40 out of 200 watts of power while the game is running at a terrible 40 - 60 fps. The frame rate limit is set to unlimited.

I have checked:

• Fps Cap is set to unlimited
• Latest graphics drivers installed and are working properly
• Correct Minecraft version
• All the other settings