I finally managed to not completely eliminate, but greatly reduce my Civ VI crashes. I took several steps, and I do not know which one worked, but I have a theory based on my observations. My system is an HP Omen laptop with Ryzen 7 4800H CPU, 16GB RAM, SSD, Nvidia GTX 1660Ti, Windows 10. I play Civ VI with no mods, and my game has all expansions and DLCs. Previously I had removed the 1330 Windows update, but in the end that only seemed to reduce the crashes slightly - they still happened often enough to prevent enjoyment of the game. So I decided to do more: 1. I reinstalled Windows 10 completely removing the previous installation, and then updated the system and all device drivers, including graphics drivers. Then I installed Steam and Civ VI. I did not bypass the launcher. All this did nothing - the game was crashing like crazy once I reached turn 150-ish on normal speed, like once every 3 turns. 2. I downgraded my Nvidia graphics drivers from the latest version to one from October 2020, I started picking the dx11 version of the game in the launcher, and I started manually quick saving at the end of each turn. This seems to have worked (no idea which of the three things did the trick, but downgrading Nvidia drivers seems most likely - it also removed all the graphics glitches I had been experiencing, like missing hair on leaders and world map flickering). In the past few days I finished two full games of Civ VI with only two or three crashes per their 200/250-ish turns.