Technically, the vision cones are absolutely fine. But the vision cone system they are using is completely overriding the base system, that Stealth requires not only staying out of sight, but also keeping quiet.
The current system is so completely broken, making Stealth rolls not needed at all. Just Stealth and avoid cones, no matter how awful your Stealth skill is, and you can sneak as well as the player who has Proficiency and placed all skill points into Stealth. Makes no sense.
