The upcoming update this week will fix this, it is what we have been discussing. In your case this means your sensor is sending signals all the time and the prop lever catches this and you hear the “click”.
With the next update, I put some code to filter the signals and avoid the sound.
The Sting S4 has custom flights models, and many custom build systems. For this reason it is much more sensitive to many things in MSFS, it is also the reason why so many people like it, it feels alive.
With the update released last Thursday, I introduced “as per user request” a new feature to disable the prop lever sounds when the prop is set to Auto, in order to do this, I had to hook up some sounds to the S4 custom physics model and other things, since this way I can track correctly when you set the prop to auto and avoid the sound.
Unfortunately this made this particular sound very sensitive to signals sent about the prop pitch lever position, such as, axis levers with hardware that are having jitter. In hence why you heard the click sound more often, this is a result of over accuracy of the custom modules for physics and other things. IT didn’t occur to me at that time certain hardware would cause this issue, things happen.. the important thing to take here is I implemented a fix withing 6 hours and pushed to Microsoft for release as soon as posible.
The upcoming fix as explained earlier, will filter the signal so the sound doesn’t play unless the lever is changed for more than 5% from the previous position (up or down), this will filter any noise on the prop lever axis caused by any reasons (old, faulty or de-calibrated hardware). In addition users will be able to turn off the prop pitch lever sounds via the EFB if they wish.
I would recommend you guys to join my discord server, I explained the causes of the issues and the fix there..
Although I am happy to come here often to monitor if anyone needs help, it is a bit difficult to keep track and repeat things many times on forums, so if anyone is looking for deep explanations of certain things is better to please come to my discord server, there users discuss thing in deep and even real pilots of the Sting S4 who were beta testers intervene and explain things for everyone.
Best,
Raul