The game has seen massive performance boosts since 1.0.3. If your hardware is struggling, updating to a newer official version often helps significantly.
The great Calradic Empire is collapsing (similar to the fall of the Roman Empire). It has split into three warring factions: Northern, Southern, and Western Empires. FiИ™ier: Mount.and.Blade.II.Bannerlord.v1.0.3.90...
At this point, the developers (TaleWorlds) were focused on stabilizing the "v1.0" experience. This version fixed several "save game" crashes and balanced the kingdom AI so that factions didn't steamroll the entire map too quickly. The game has seen massive performance boosts since 1
If you are asking about the of the game, here is the setup: It has split into three warring factions: Northern,
Most modern mods for Bannerlord now require version 1.2.x or higher. A 1.0.3 build will likely break if you try to install newer mods from the Steam Workshop or Nexus Mods.