Reduce render distances for better performance

- Terrain load radius: 2 tiles (was 6) - 25 tiles max vs 169
- WMO render distance: 500 units (was 3000)
- M2 doodad distance: 300 units (was 1000)

include/rendering/terrain_manager.hpp

@@ -240,8 +240,8 @@ private:
 
     // Streaming parameters
     bool streamingEnabled = true;
-    int loadRadius = 6;      // Load tiles within this radius (13x13 grid, ~3200 units)
-    int unloadRadius = 8;    // Unload tiles beyond this radius (~4266 units)
+    int loadRadius = 2;      // Load tiles within this radius (5x5 grid for performance)
+    int unloadRadius = 3;    // Unload tiles beyond this radius
     float updateInterval = 0.1f;  // Check streaming every 0.1 seconds
     float timeSinceLastUpdate = 0.0f;
 

src/rendering/m2_renderer.cpp

@@ -364,7 +364,7 @@ void M2Renderer::render(const Camera& camera, const glm::mat4& view, const glm::
     lastDrawCallCount = 0;
 
     // Distance-based culling threshold for M2 models
-    const float maxRenderDistance = 1000.0f;  // Don't render small doodads beyond this
+    const float maxRenderDistance = 300.0f;  // Reduced for performance
     const float maxRenderDistanceSq = maxRenderDistance * maxRenderDistance;
     const glm::vec3 camPos = camera.getPosition();
 

src/rendering/wmo_renderer.cpp

@@ -354,7 +354,7 @@ void WMORenderer::render(const Camera& camera, const glm::mat4& view, const glm:
 
     // Render all instances with instance-level culling
     const glm::vec3 camPos = camera.getPosition();
-    const float maxRenderDistance = 3000.0f;  // Don't render WMOs beyond this distance
+    const float maxRenderDistance = 500.0f;  // Reduced for performance
     const float maxRenderDistanceSq = maxRenderDistance * maxRenderDistance;
 
     for (const auto& instance : instances) {