I am also using Saitek Yoke System and Saitek Cessna rudder controllers. From another post I gather that automatic rudder is supposed to be "automatically" disabled if the sim detects rudder pedals are attached. As of at least XP11 R1.05 (and earlier), this auto detection does not appear to be reliable, at least not with my Saitek equipment and Windows 10 on a rig that does not have "legacy" USB ports, i.e. a motherboard with a Z170 chipset.
IT WOULD BE MUCH BETTER (IMHO) if XP11 were to allow the user to manually (in Settings) disable automatic rudder turn coordination. If this capability actually exists somewhere, it isn't documented. Sheesh.