I have no such probllems as I have my KODI set to Change Display rate to source. With LE 8.1.9 it has all the old main integer rounded display rates like 24, 50 and 60 fps and the fractional rates too like 23.96 as you have seen. By setting your KODI to force your TV to auto adjust it's display rate to that of the streaming source at start/stop, you should then avoid all such micro stutters you get with using the nearest integer rounded display rate as we used to have to with older LE/KODI versions.
I have the change display rate to source setting turned on at start/stop with my Mecool M8S Pro+ running LE 8.1.9 and I'm also seeing it play 24fps content as 23.976fps.