Hey gifrem,
Local uses hardware-based acceleration to achieve max performance. Most modern computer support this, but sometimes their BIOS have this disabled. If hardware-based performance isn’t available Local falls-back to software-based acceleration which is WAY slower.
Here are a few ideas for how to enable this in your BIOS: [Windows] Help! I'm getting a BIOS error about VT-X/AMD-v during installation
If you’re on a computer that’s older than 3 years, try updating your BIOS first.