Getting the Havoc 2-4 training server ready for a training tonight and I noticed that the difficulty settings that are defined server-side via the server.arma3profile file no longer work. As far as I can tell so far, the only way to set the difficulty settings is via "Game Options" when you select a mission when logged into the server. Lots of additional settings have now been made available, so the "official settings" for the 506th will probably need to be revisited.
Edit: https://community.bistudio.com/wiki/Arma_3_Difficulty_Overhaul
Edit 2: During training we experience significant performance issues where the framerate would drop to 5 FPS. Everyone experienced this independently of one another and at different times, and server's CPU and RAM utilization was low. Textures also became low-resolution. Additionally at no point did AI return fire under any circumstances.
Edit: https://community.bistudio.com/wiki/Arma_3_Difficulty_Overhaul
Edit 2: During training we experience significant performance issues where the framerate would drop to 5 FPS. Everyone experienced this independently of one another and at different times, and server's CPU and RAM utilization was low. Textures also became low-resolution. Additionally at no point did AI return fire under any circumstances.