I worked with Frostbite for five years. The engine is very capable. It's also developed in a vacuum with very little exposure to actual game development. It's

I worked with Frostbite for five years. The engine is very capable. It's also developed in a vacuum with very little exposure to actual game development. It's used to create fancy new features and show them off in tiny toy projects. Then it's handed off to developers to make actual games and the issues begin. The biggest issue with Frostbite was always that its developers treated it like an ever revolving set of cool new projects. There was always some fancy new system meant to replace the old one in just a few years and never any fixes for the shipped and still broken systems.