When i don't look at entities directly they seemingly disappear. This happens even if i use vanilla sight or expand the sight angle from the mod configuration options

Almost forgot, after some tweaking in the configuration with entity fading options i noticed that only the Lycanite mobs disappear completely. The vanilla ones fade as intended when not seen

So, with player senses disabled, vanilla mobs still fade, and Lycanite's mobs disappear?

Also, are you connected to a server via the multiplayer menu?

I tried using the mod both on my server and in single player, with player senses disabled nothing seem to change

I've been unable to find anything like this specific to DS <-> Lycanite compat (with the latest versions of each mod ofc)

For player senses, make sure it's disabled on the server hosting the game, and that the server is restarted after it is set (I need to re-add the "requires MC restart" tag on that)

Large mobs sometimes have an issue with disappearing when on the edge of sight. This is a vanilla MC bug

If it's neither of those things, maybe post some screenshots (or better, a video) and I'll take another look