Inaccurate scene detection

Hi, when inserting a video and subsequent clip jobs, the individual parts are split. The beginning of each scene is OK, but the end of each scene contains several frames of the next scene. So I have to adjust each end manually. They basically add one frame to each scene. The problem occurs in essentially any version, namely FullHD video. Everything is fine with 4K video (job takes longer to load) 3rd party apps don't have as good results as Kdenlive. I use 21.11.70 and 22.04.3 The latest version when loading (threshold 99) creates one track. When lowering the threshold to a lower value, the application crashes.

The latest version (22.08.2) and nightly builds also have the wrong editing. Unfortunately I have to separate each end manually. Either via Shift R or via the razor tool. But it takes a lot of time

Can Kdenlive (in the future) be set to save individual cut scenes to disc (1:1) without quality loss? Would you choose a few of the approximately 300 saved parts and load them directly into Kdenlive? In this way, work in the program is much faster (with many hundreds of scenes loaded, the program is slow and the RAM is very full).

I attach the issue in pictures. Thank you for your help