Finally found the root of that off by one error. Changed up the readme.

src/Camera.cpp

@@ -93,11 +93,13 @@ void Camera::recieve_event(VrEventPublisher* publisher, std::unique_ptr<vr::Even
 
 		vr::KeyHeld *held_event = static_cast<vr::KeyHeld*>(event.get());
 
-		default_impulse = 1.0f;
-
 		if (held_event->code == sf::Keyboard::LShift) {
 			default_impulse = 0.2f;
 		}
+		if (held_event->code == sf::Keyboard::RShift) {
+			default_impulse = 1.0f;
+		}
+
 		else if (held_event->code == sf::Keyboard::C) {
 			look_at_center();
 		}