@th
Auch wenn es schon etwas her ist:

You'd be amazed by how bad C1 is in terms of optimizations. You'd also be amazed by how much merging shaders can help speed up the engine. CE2 was a huge waste of resources, it really was. Just.... trust me on that. [...]
Tetxures, objects, LODs, all of these things were not well optimized for memory usage in CE2. With some correct optimizations they could easily get the game to run within the console
limits. Again, the game was actually horribly optimized, and everyone at Crytek knows it. Everything from the assets to the post-process pipeline wasn't given much thought as they were purely PC at the time.
http://www.crydev.net/viewtopic.php?p=845983#p845983

Der Artikel der PCGames stimmt in dem Fall.