How can I avoid DeSmuME 0.9.11 from causing the CPU on my laptop to skyrocket?

- 3D Setting is set as Software Rasterizer
- Frame skip 1 is enabled

Even without any other programs running DeSmuME 0.9.11 x64 still skyrockets the CPU when playing Pokémon HeartGold.

The game lags and music is really slow paced.
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