If enabled, the PSO precaching system will not precache PSOs that the D3D12 graphics driver considers similar for caching, i.e. it will not precache PSOs that while technically different will still result in a driver cache hit.\n
Usage
r.PSOPrecache.D3D12.DriverCacheAware [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.