We have been working very hard, and finally there is good news. Our developers have realized some fundamental changes to the game engine, and the performance patch will be ready for takeoff soon.
The patch improves both simulation and rendering performance, leading to higher frame rates and a more fluent game on all systems. In addition, stuttering due to monthly calculations or camera movement has been addressed.
Because of the heavy changes, beta testing before official release is of utmost importance. Beta testing is scheduled to start on Wednesday, April 18. Details about how to switch to the beta branch can be found in the Wiki.
Transport Fever is still very popular on Steam and other platforms, and the whole Urban Games team looks forward to releasing this major patch soon!