Today, I did some debugging and discovered, that disabling shadows from debug gives you 10-20 fps boost. That is significant difference on the performance and would be very helpful for us, who are having issues with low performance. It could be either a mod or a complete feature in the game. If someone would be willing to do this, I would be pleased, and propably many others as well.
Umm, what are you talking about ? It should be standard feature from the basic options, not only from the debug.