Dolby Vision to SDR converting problem

[shurikello]

When encoding DoVi to SDR using Vapoursynth, I ran into the following problem: in some cases, the algorithm highlights some scenes in the video too much (in preview mode, numerous flickering frames are visible in the direction of increasing brightness a ~1 second before this scene). No matter what settings I adjusted, I couldn't turn off this flickering and floating brightness and force/fix it on some specific scale.
My settings in attach.