We have introduced a code of conduct. This change only codifies our existing rules, for any newcomers to read. All users are expected to abide by them.
MaLDo OnTheFly utility lets you change the graphics options within the game just by pressing a key, switch HUD on and off, change FOV and more from within the game.
There seems to be problem with binding F key. Keep F key unbound or bind it to USE action.
The game may crash with the above error message when launching a campaign mission. Launch Crysis3.exe as an administrator to avoid this.