I tested this on a mid-range system (i5-12400F, RTX 3060, 32GB RAM). The test location was New York City (DD NYC Scenery) with a Toliss A319.

Output/preferences/X-Plane.prf

Disable "Threaded Optimization" in the Nvidia Control Panel, as X-Plane's engine often handles threading better on its own. 2. Essential Performance Plugins