I recently started playing Vampyr on PS4 (Oct. 2020), and I'm noticing frequent game crashes when trying to place a custom marker on the map. This issue occurs when trying to place a custom marker on top of a side mission marker. I have had no issues placing custom markers elsewhere on the map. The game crashes to a blue error screen. I'm using the digital version of the game. Since the game is a couple years old, I doubt we will see an update to fix this problem, but knowing is half the battle. I recommend you avoid the above-mentioned scenario unless you're trying to follow the scientific method of discovery in order to determine if this, too, is the cause for your game crashing.