Carmack revealed that the BFG version of Doom 3 will run with 60Hz on consoles in 3D mode. This basically means that Doom 3: BFG will be a 30fps game for both X360 and PS3. The PC version, on the other hand, will offer true 120Hz 3D stereoscopic experience, meaning that PC gamers will enjoy 60fps at high resolutions.
Carmack admitted that RAGE lacked dynamic shadows and lights, something that had a huge impact on it. On the other hand, Carmack stated that the shadows were a bit harsh on Doom 3. However, the programmer guru said that it was great to see so many dynamic lights and shadows. Damn straight right, and thats exactly what we want in our games. Carmack promised that their next game will feature more dynamic shadows.
Carmack has also admitted that the flashlight was not attached to the weapons in the original version of Doom 3 due to performance issues. Although this feature was awesome for its atmosphere, Carmack said that the flashlight would introduce an additional pass for dynamic shadows, meaning that it would had a significant performance hit.