Since is an very old stick (discontinued in 2003) as in any other game (DCS, CloD, 1946..) work, with some issues. Latest update (3.008) - of IL-2:GB, add this:
"3. Force Feedback joystick owners who experience stutters can alter the new value in startup.cfg that governs the maximum frequency of FFB effects polling to try to eliminate them (update_freq parameter in [KEY = force_feedback] section can be set to a value from 0.5 Hz to 10 Hz, example: update_freq = 10.0);"