I just made a post in another thread showing how I measure “stutters” using CpaFrameX. See here.
My suggestion is you measure your performance at your current settings. Focus in on the 2 charts I show in that post. Then adjust 1 setting and remeasure. This will tell you if that setting made any difference to the stutters. Eventually you’ll focus in on which settings most contribute to your stutters. You want to watch your 1% percent lows values and optimize your frame-to-frame variance. See if you can get your graphs to look like mine or better.