Am besten schaust du mal nach unter www.prepare3d.com , dort findest du u.a. das hier:
What’s New in Prepar3D
Lockheed Martin continuously evolves Prepar3D to maintain its place as a front runner in the modeling and simulation marketplace. The latest features and functions available in Prepar3D include: New user interface – Users now have a Windows 7 compatible drag n’ drop interface with customizable settings. Quickly create and save your favorite missions. Multiple monitor settings saved – Users can quickly save panel and scenery window locations across multiple monitors with flight files. Prepar3D remembers the settings upon restarting a flight and restarting Prepar3D. Internet multi-player capability – Users across the globe can collaborate with others within the Prepar3D environment to train for their missions or tasks. Multi-channel capability – Users can harness the power of this new feature to operate Prepar3D with multiple computers creating a more expansive viewing capability all the way up to 360 degrees field of view. Sensor camera options – Users can experience night vision and infrared sensor camera options to enhance military mission or night flying training. Realistic scenery – Millions of square kilometers of the earth have been checked and upgraded to accurately represent the urban environment. High resolution 12 cm content added for specific locations. Higher quality graphics – Users will experience higher quality graphics such as more realistic rainy or snowy weather with the modernized shader model 3.0. Also offered for higher quality graphics are increased texture limits which can be set as high as 4096 x 4096. Underwater environments – Users can take their simulation experience underwater with submarines and the U.S. Geological Survey’s coastal bathymetry. Enhanced developer toolset – Developers can use the Prepar3D environment to create new training solutions for the most modern platforms. To aid in rapid development, Prepar3D is now compatible with Windows 7 and Visual Studio 2010; it offers a Windows Presentation Foundation (WPF) user interface, an external simulator capability that provides enhanced control of the simulation code, new code samples updated in the Software Development Kit (SDK) documentation and support for the latest 3DStudio Max tools. Developers can also create a richer user experience with higher resolution terrain by taking advantage of the increased texture limits. Expanded Hardware Controls – Users, especially fighter pilots, can now train with realistic hands on throttle and stick (HOTAS).
Bremse heißt einfach nur, dass der Virenscanner wie auch andere geöffnete Programme Ressourcen des Computers belegt. Den auszuschalten, würde dir allerhöchstens einen kleinen FPS-Boost bringen, wobei ich davon mehr gehört habe als dass ich es selber erlebt habe. Du könntest trotzdem mal nachschauen, dass der Scanner nicht den FSX blockiert - auch wenn das sehr unwahrscheinlich ist.