Yeah, unfortunately, I probably read way too much on the topic to the point where I’m more confused then when I started. My switch doesn’t have that setting - not that I can see.
There is a mysterious “parameter 13” that comes up from time to time in forums and posts - as maybe addressing the forcing of a 3-way setting - which I do have, but it’s called “load type” and my options are “auto detect” and “manually set for special load type”. I’ve tried both, and it seems to make it worse.
Once I set manual, there doesn’t appear to be any instructions on what to do with the manual setting - or what the manual setting does. This is probably the best I could find: