Sometimes, you need legacy software. You might have a proprietary solver from 2010 that only runs on x86 Windows.
This is where the "high quality" magic happens. By default, many VMs scale apps poorly. To get crisp, readable circuits: cade simu mac high quality
The MacBook Air (fanless) is NOT suitable for high-quality simulation. A 10-minute thermal simulation will cause the Air to throttle down to 50% speed. You need a MacBook Pro (14 or 16-inch) with active cooling fans. Sometimes, you need legacy software
