* In the Edit menu, Project Settings, Quality, select Medium or Low. Insane can be very taxing on the graphics card. You can also tweak the LOD Bias (lower it to trade quality for speed), more info here: https://docs.unity3d.com/Manual/class-QualitySettings.html
* In the Jobs menu, Burst, make sure that Enable Compilation is toggled on and that Safety Checks isn’t.
* In the Jobs menu, Edit > Preferences > Jobs, Leak Detection Level, make sure that Disabled is selected. Leak detection uses small GC allocations for debugging purposes and those will slow everything down.
Julian