VHS generation loss (50fps)

What happens if record (make copy) from one tape to another tape 20 times in PAL.

Capture: EasyCap (Chip UTV007)

VCRs:
Player (1st generation): LG L396
Recorder: Sony SLV-P53EE
0:00 - 1st generation
0:17 - 2nd generation
0:35 - 3rd generation
0:53 - 4th genetration
1:10 - 5th genetration
1:28 - 6th genetration
1:46 - 7th genetration
2:04 - 8th genetration
2:23 - 9th genetration
2:41 - 10th genetration
3:00 - 11th genetration
3:19 - 12th genetration
3:39 - 13th genetration
3:59 - 14th genetration
4:20 - 15th genetration
4:42 - 16th genetration
5:04 - 17th genetration
5:26 - 18th genetration
5:49 - 19th genetration
6:12 - 20th genetration

Видео VHS generation loss (50fps) канала bagdenisov2