This looks like you're diving into the classic 2013 (often referred to as SimCity 5) specifically the "Complete Edition" repacks often shared by groups like R.G. Mechanics.
: Often includes multiple language packs selectable during installation. Performance and Compatibility
2.2 Regional Play and "Great Works"
While the offline patch solves single-player latency, it fundamentally alters Multiplayer/Regional mechanics. Without server synchronization, the "Global Market" prices become static (controlled by local simulation variables rather than global player supply/demand). However, for the solo player, the ability to build "Great Works" (Arcologies, Spaceports) within a private region is fully functional, provided the player manually manages the cities within that region.
Performance Fixes: Massive optimizations for simulation speed and traffic AI.