ListPicker and VideoPlayer cursor

I need to reference the setting of the play cursor in the video player.
After selecting the appropriate line from the list, I want the playback to start at the time I indicated.
Unfortunately, it's not precise.
While 10 000 ms - 60 000 ms works well (10s - 60s), with values of 80 000 ms - 100 000 ms and more, the cursor is set in the wrong position. The longer the video, the worse it is (a difference of up to 8 seconds).

Here's a short video of what it looks like:

My app:

File with extension *.aia:
Test.aia (53.9 KB)

Where can I find help for my problem?