Apparently put FF=0 in conf.ini has no effect (typical CLoD

).
Try deleting/rename .ffe files in
...\Steam\SteamApps\common\il-2 sturmovik cliffs of dover\parts\core\FF
Code:
autocannon.ffe
bomb.ffe
machinegun.ffe
mortar.ffe
punch.ffe
shake.ffe
SPRING.FFE
Leave unchanged the file "spring.ffe" that make the stick return to center.
http://forum.1cpublishing.eu/showthread.php?t=27264
Sokol1