Add Performance Optimization

Performance-Optimization.md

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+# Performance Optimization  
+
+Optimizing **IL-2 Sturmovik: Cliffs of Dover** ensures smoother gameplay, better visuals, and higher frame rates.  
+
+## Graphics Settings  
+- **Resolution** - Set to native resolution for the best clarity.  
+- **Anti-Aliasing** - FXAA or SMAA for smooth edges.  
+- **Shadows & Reflections** - Lower settings can improve FPS.  
+- **Cloud Quality** - High settings may reduce performance significantly.  
+
+## VR & Head-Tracking  
+- Use **OpenTrack** for head-tracking (TrackIR alternative).  
+- Adjust **IPD settings** for optimal clarity in VR.  
+
+## Config Tweaks  
+- Modify `conf.ini` for advanced settings (found in *Documents/1C SoftClub/Cliffs of Dover Blitz*).  
+- Disable background apps for better CPU performance.  
+
+For further help, visit [Common Issues & Fixes](./Common-Issues-and-Fixes.md).