@n2wichita75 tldr; what Kapoteeni said.
I haven’t given my opinion on Funcom’s ability to develop games in this thread, or whether such a degree of developing skill is required to be able/allowed to use newer consoles. New technology presents new possibilities, regardless of whether developers take advantage of them. Even if they don’t, in the current market adapting to newer consoles is necessary. Newer consoles have features relevant for consumers and often more secure. Backwards compatibility is easier to create than forward compatibility.
Funcom has been around for a while. Being able to develop well on older platforms does not guarantee they’re able to develop well on newer platforms.
Fixes breaking the game applies to most large sandbox survival games. Assets are a lot more connected and as such can have very specific issues which are hard to fix if you don’t know where to look. Fixing them may rely on people with different setups and playstyles testing them, which developers can only do very limited in-office. TestLive is also only being played by a handful of players.
Conan Exiles was made when Funcom was in debt and its base code has some issues, so they have to find workarounds when implementing certain features. The engine version it’s built on is also not optimized for very large map sizes, which in certain areas can lead to odd behaviour (e.g. by the eastern border of the map, creatures might occasionally glitch through the mesh).