Hi Prophet, I've tried the cannon and I don't have troble with dropping FPS. My settings: 2Q antialiasing, 2 filtering, full sadows, heat blur, canopy, full effects, scenery medium, visibilty 50, full haze (haze relly has no effect on this stupid shadow bug.. :D ).
It seems to me, that appearance of some bugs really depends on individual system after I've read some threads here. I have now only one solution - I won't fly Su-33 (unfortunately my favorit plane)....(I really hate that shadow, It sucks.... :D )
O.