My bike is new and I ride the twisties in Colorado a lot. Sometimes I am 'jamming'. My first few rides were bouncy and I wasn't pleased with the handling in the curves.It wasn't horrendous or anything like you describe but still ...
I guessed( correctly) to adjust the rear shock to about half way. It was set on the lowest setting.Major difference !! Curve lines are exact,a little hard on major bumps but for (as was mentioned) no bucks I have fallen deeper in love with my F6B. Kid you not I had to find another way to hold my left foot,scraping the toe of my boots in the corners and I am NOT the "boy racer".
This thing is phenomenal !