blurry texture with meljet777(not aircraft texture)!!!

Hi,I get blurry terrain texture while flying Meljet B777(i dont mean aircraft textures). also when i look in any direction from the cockpit my FPS drops down to 2 or 3 FPS for nearly 3 seconds then it returns back to normal...very annoying.Note: i read the line saying 'in case of blurry textures try to zoom in and out' in the readme file does he mean aircraft textures or what?Is it me only who have this problem??Thanks