I've had so many encounters where I'm trying to raise my weapon by holding RMB, then lower it again very fast in order to start running, but the game thinks I did a short press of RMB, so instead of lowering the weapon it actually toggles aiming down the sights, which makes me a sitting duck while the guy I'm fighting has the time to go around me and kill me. Another annoying issue with this keybinding is that I sometimes press it by mistake while doing another action, such as reloading, so I'm stuck walking while reloading instead of running, giving the enemy the right amount of time to shoot me. I've looked through every config file and it currently appears that there is no way to disable RMB click from toggling ADS.