Metro Exodus is a great game (review coming soon!), but it does have some technical problems to polish out, much like any game. The latest PC hotfix is here for the game, on both Epic Games Store and Steam, and we've got the full Metro Exodus Patch Notes below.
The latest patch brings the Epic Games Store version to version 22.214.171.124 and the Steam version to 126.96.36.199, and is supposed to fix certain crashes, as well as problems with DLSS. It should increase performance too. Let's have a see.
Metro Exodus Patch Notes for PC Hotfix Version 188.8.131.52