Try altering the Settings which might be related to it (airplane details, etc.). Or are you playing with max-Settings?. Maybe clearing the cache also helps. If nothing else works, let Steam check your game-files.
Blury textures are a problem of the game but can be adressed with SweetFX and fiddeling around with the grapics-Settings or by Downsampling (which could be possible with your Graphics-Card, google it).
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AMD Penom ll 6x 1055T Processor 2.8 GHz // 8GB Ram // XFX Radeon HD 7870 Black Edition DD (2048 MB Memory DDR5, GPU 1055MHz) // Windows 7 Professional 64 Bit Version
Saitek x52 // Saitek Throttle Quadrant // Saitek Pro Flight Rudder Pedals // Track IR 5
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