Aristos
Lightseeker
A thing I notice is that if I play Civ 6 for a while, then exit and do something else, then come back and start it up again, it is much quicker to load the second time.
That's your OS doing magic. Happens with any and all software. Memory management. If enough memory available, big chunks of code are left in memory for a while pre-empting a relaunch of same software to make it reload faster (already in memory instead of fully from disk like when first launching it).